java.awt
Class Component

java.lang.Object sample code for java.lang.Object definition code for java.lang.Object 
  extended by java.awt.Component
All Implemented Interfaces:
ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver , MenuContainer sample code for java.awt.MenuContainer definition code for java.awt.MenuContainer , Serializable sample code for java.io.Serializable definition code for java.io.Serializable
Direct Known Subclasses:
Button sample code for java.awt.Button definition code for java.awt.Button , Canvas sample code for java.awt.Canvas definition code for java.awt.Canvas , Checkbox sample code for java.awt.Checkbox definition code for java.awt.Checkbox , Choice sample code for java.awt.Choice definition code for java.awt.Choice , Container sample code for java.awt.Container definition code for java.awt.Container , Label sample code for java.awt.Label definition code for java.awt.Label , List sample code for java.awt.List definition code for java.awt.List , Scrollbar sample code for java.awt.Scrollbar definition code for java.awt.Scrollbar , TextComponent sample code for java.awt.TextComponent definition code for java.awt.TextComponent

public abstract class Component
extends Object sample code for java.lang.Object definition code for java.lang.Object
implements ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver , MenuContainer sample code for java.awt.MenuContainer definition code for java.awt.MenuContainer , Serializable sample code for java.io.Serializable definition code for java.io.Serializable

A component is an object having a graphical representation that can be displayed on the screen and that can interact with the user. Examples of components are the buttons, checkboxes, and scrollbars of a typical graphical user interface.

The Component class is the abstract superclass of the nonmenu-related Abstract Window Toolkit components. Class Component can also be extended directly to create a lightweight component. A lightweight component is a component that is not associated with a native opaque window.

Serialization

It is important to note that only AWT listeners which conform to the Serializable protocol will be saved when the object is stored. If an AWT object has listeners that aren't marked serializable, they will be dropped at writeObject time. Developers will need, as always, to consider the implications of making an object serializable. One situation to watch out for is this:
    import java.awt.*;
    import java.awt.event.*;
    import java.io.Serializable;
    
    class MyApp implements ActionListener, Serializable
    {
        BigObjectThatShouldNotBeSerializedWithAButton bigOne;
        Button aButton = new Button();
      
        MyApp()
        {
            // Oops, now aButton has a listener with a reference
            // to bigOne!
            aButton.addActionListener(this);
        }
    
        public void actionPerformed(ActionEvent e)
        {
            System.out.println("Hello There");
        }
    }
 
In this example, serializing aButton by itself will cause MyApp and everything it refers to to be serialized as well. The problem is that the listener is serializable by coincidence, not by design. To separate the decisions about MyApp and the ActionListener being serializable one can use a nested class, as in the following example:
    import java.awt.*;
    import java.awt.event.*;
    import java.io.Serializable;

    class MyApp java.io.Serializable
    {
         BigObjectThatShouldNotBeSerializedWithAButton bigOne;
         Button aButton = new Button();

         class MyActionListener implements ActionListener
         {
             public void actionPerformed(ActionEvent e)
             {
                 System.out.println("Hello There");
             }
         }
 
         MyApp()
         {
             aButton.addActionListener(new MyActionListener());
         }
    }
 

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

For details on the focus subsystem, see How to Use the Focus Subsystem, a section in The Java Tutorial, and the Focus Specification for more information.

See Also:
Serialized Form

Nested Class Summary
protected  class Component.AccessibleAWTComponent sample code for java.awt.Component.AccessibleAWTComponent definition code for java.awt.Component.AccessibleAWTComponent
          Inner class of Component used to provide default support for accessibility.
protected  class Component.BltBufferStrategy sample code for java.awt.Component.BltBufferStrategy definition code for java.awt.Component.BltBufferStrategy
          Inner class for blitting offscreen surfaces to a component.
protected  class Component.FlipBufferStrategy sample code for java.awt.Component.FlipBufferStrategy definition code for java.awt.Component.FlipBufferStrategy
          Inner class for flipping buffers on a component.
 
Field Summary
static float BOTTOM_ALIGNMENT sample code for java.awt.Component.BOTTOM_ALIGNMENT definition code for java.awt.Component.BOTTOM_ALIGNMENT
          Ease-of-use constant for getAlignmentY.
static float CENTER_ALIGNMENT sample code for java.awt.Component.CENTER_ALIGNMENT definition code for java.awt.Component.CENTER_ALIGNMENT
          Ease-of-use constant for getAlignmentY and getAlignmentX.
static float LEFT_ALIGNMENT sample code for java.awt.Component.LEFT_ALIGNMENT definition code for java.awt.Component.LEFT_ALIGNMENT
          Ease-of-use constant for getAlignmentX.
static float RIGHT_ALIGNMENT sample code for java.awt.Component.RIGHT_ALIGNMENT definition code for java.awt.Component.RIGHT_ALIGNMENT
          Ease-of-use constant for getAlignmentX.
static float TOP_ALIGNMENT sample code for java.awt.Component.TOP_ALIGNMENT definition code for java.awt.Component.TOP_ALIGNMENT
          Ease-of-use constant for getAlignmentY().
 
Fields inherited from interface java.awt.image.ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver
ABORT sample code for java.awt.image.ImageObserver.ABORT definition code for java.awt.image.ImageObserver.ABORT , ALLBITS sample code for java.awt.image.ImageObserver.ALLBITS definition code for java.awt.image.ImageObserver.ALLBITS , ERROR sample code for java.awt.image.ImageObserver.ERROR definition code for java.awt.image.ImageObserver.ERROR , FRAMEBITS sample code for java.awt.image.ImageObserver.FRAMEBITS definition code for java.awt.image.ImageObserver.FRAMEBITS , HEIGHT sample code for java.awt.image.ImageObserver.HEIGHT definition code for java.awt.image.ImageObserver.HEIGHT , PROPERTIES sample code for java.awt.image.ImageObserver.PROPERTIES definition code for java.awt.image.ImageObserver.PROPERTIES , SOMEBITS sample code for java.awt.image.ImageObserver.SOMEBITS definition code for java.awt.image.ImageObserver.SOMEBITS , WIDTH sample code for java.awt.image.ImageObserver.WIDTH definition code for java.awt.image.ImageObserver.WIDTH
 
Constructor Summary
protected Component sample code for java.awt.Component.Component() definition code for java.awt.Component.Component() ()
          Constructs a new component.
 
Method Summary
 boolean action sample code for java.awt.Component.action(java.awt.Event, java.lang.Object) definition code for java.awt.Component.action(java.awt.Event, java.lang.Object) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, Object sample code for java.lang.Object definition code for java.lang.Object  what)
          Deprecated. As of JDK version 1.1, should register this component as ActionListener on component which fires action events.
 void add sample code for java.awt.Component.add(java.awt.PopupMenu) definition code for java.awt.Component.add(java.awt.PopupMenu) (PopupMenu sample code for java.awt.PopupMenu definition code for java.awt.PopupMenu  popup)
          Adds the specified popup menu to the component.
 void addComponentListener sample code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) (ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener  l)
          Adds the specified component listener to receive component events from this component.
 void addFocusListener sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) (FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener  l)
          Adds the specified focus listener to receive focus events from this component when this component gains input focus.
 void addHierarchyBoundsListener sample code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) (HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener  l)
          Adds the specified hierarchy bounds listener to receive hierarchy bounds events from this component when the hierarchy to which this container belongs changes.
 void addHierarchyListener sample code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) (HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener  l)
          Adds the specified hierarchy listener to receive hierarchy changed events from this component when the hierarchy to which this container belongs changes.
 void addInputMethodListener sample code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) (InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener  l)
          Adds the specified input method listener to receive input method events from this component.
 void addKeyListener sample code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) (KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener  l)
          Adds the specified key listener to receive key events from this component.
 void addMouseListener sample code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) (MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener  l)
          Adds the specified mouse listener to receive mouse events from this component.
 void addMouseMotionListener sample code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) (MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener  l)
          Adds the specified mouse motion listener to receive mouse motion events from this component.
 void addMouseWheelListener sample code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) (MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener  l)
          Adds the specified mouse wheel listener to receive mouse wheel events from this component.
 void addNotify sample code for java.awt.Component.addNotify() definition code for java.awt.Component.addNotify() ()
          Makes this Component displayable by connecting it to a native screen resource.
 void addPropertyChangeListener sample code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) (PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
          Adds a PropertyChangeListener to the listener list.
 void addPropertyChangeListener sample code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) (String sample code for java.lang.String definition code for java.lang.String  propertyName, PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
          Adds a PropertyChangeListener to the listener list for a specific property.
 void applyComponentOrientation sample code for java.awt.Component.applyComponentOrientation(java.awt.ComponentOrientation) definition code for java.awt.Component.applyComponentOrientation(java.awt.ComponentOrientation) (ComponentOrientation sample code for java.awt.ComponentOrientation definition code for java.awt.ComponentOrientation  orientation)
          Sets the ComponentOrientation property of this component and all components contained within it.
 boolean areFocusTraversalKeysSet sample code for java.awt.Component.areFocusTraversalKeysSet(int) definition code for java.awt.Component.areFocusTraversalKeysSet(int) (int id)
          Returns whether the Set of focus traversal keys for the given focus traversal operation has been explicitly defined for this Component.
 Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle bounds sample code for java.awt.Component.bounds() definition code for java.awt.Component.bounds() ()
          Deprecated. As of JDK version 1.1, replaced by getBounds().
 int checkImage sample code for java.awt.Component.checkImage(java.awt.Image, java.awt.image.ImageObserver) definition code for java.awt.Component.checkImage(java.awt.Image, java.awt.image.ImageObserver) (Image sample code for java.awt.Image definition code for java.awt.Image  image, ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
          Returns the status of the construction of a screen representation of the specified image.
 int checkImage sample code for java.awt.Component.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Component.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver) (Image sample code for java.awt.Image definition code for java.awt.Image  image, int width, int height, ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
          Returns the status of the construction of a screen representation of the specified image.
protected  AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent coalesceEvents sample code for java.awt.Component.coalesceEvents(java.awt.AWTEvent, java.awt.AWTEvent) definition code for java.awt.Component.coalesceEvents(java.awt.AWTEvent, java.awt.AWTEvent) (AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  existingEvent, AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  newEvent)
          Potentially coalesce an event being posted with an existing event.
 boolean contains sample code for java.awt.Component.contains(int, int) definition code for java.awt.Component.contains(int, int) (int x, int y)
          Checks whether this component "contains" the specified point, where x and y are defined to be relative to the coordinate system of this component.
 boolean contains sample code for java.awt.Component.contains(java.awt.Point) definition code for java.awt.Component.contains(java.awt.Point) (Point sample code for java.awt.Point definition code for java.awt.Point  p)
          Checks whether this component "contains" the specified point, where the point's x and y coordinates are defined to be relative to the coordinate system of this component.
 Image sample code for java.awt.Image definition code for java.awt.Image createImage sample code for java.awt.Component.createImage(java.awt.image.ImageProducer) definition code for java.awt.Component.createImage(java.awt.image.ImageProducer) (ImageProducer sample code for java.awt.image.ImageProducer definition code for java.awt.image.ImageProducer  producer)
          Creates an image from the specified image producer.
 Image sample code for java.awt.Image definition code for java.awt.Image createImage sample code for java.awt.Component.createImage(int, int) definition code for java.awt.Component.createImage(int, int) (int width, int height)
          Creates an off-screen drawable image to be used for double buffering.
 VolatileImage sample code for java.awt.image.VolatileImage definition code for java.awt.image.VolatileImage createVolatileImage sample code for java.awt.Component.createVolatileImage(int, int) definition code for java.awt.Component.createVolatileImage(int, int) (int width, int height)
          Creates a volatile off-screen drawable image to be used for double buffering.
 VolatileImage sample code for java.awt.image.VolatileImage definition code for java.awt.image.VolatileImage createVolatileImage sample code for java.awt.Component.createVolatileImage(int, int, java.awt.ImageCapabilities) definition code for java.awt.Component.createVolatileImage(int, int, java.awt.ImageCapabilities) (int width, int height, ImageCapabilities sample code for java.awt.ImageCapabilities definition code for java.awt.ImageCapabilities  caps)
          Creates a volatile off-screen drawable image, with the given capabilities.
 void deliverEvent sample code for java.awt.Component.deliverEvent(java.awt.Event) definition code for java.awt.Component.deliverEvent(java.awt.Event) (Event sample code for java.awt.Event definition code for java.awt.Event  e)
          Deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent e).
 void disable sample code for java.awt.Component.disable() definition code for java.awt.Component.disable() ()
          Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).
protected  void disableEvents sample code for java.awt.Component.disableEvents(long) definition code for java.awt.Component.disableEvents(long) (long eventsToDisable)
          Disables the events defined by the specified event mask parameter from being delivered to this component.
 void dispatchEvent sample code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) definition code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) (AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  e)
          Dispatches an event to this component or one of its sub components.
 void doLayout sample code for java.awt.Component.doLayout() definition code for java.awt.Component.doLayout() ()
          Prompts the layout manager to lay out this component.
 void enable sample code for java.awt.Component.enable() definition code for java.awt.Component.enable() ()
          Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).
 void enable sample code for java.awt.Component.enable(boolean) definition code for java.awt.Component.enable(boolean) (boolean b)
          Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).
protected  void enableEvents sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long) (long eventsToEnable)
          Enables the events defined by the specified event mask parameter to be delivered to this component.
 void enableInputMethods sample code for java.awt.Component.enableInputMethods(boolean) definition code for java.awt.Component.enableInputMethods(boolean) (boolean enable)
          Enables or disables input method support for this component.
protected  void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, boolean, boolean) definition code for java.awt.Component.firePropertyChange(java.lang.String, boolean, boolean) (String sample code for java.lang.String definition code for java.lang.String  propertyName, boolean oldValue, boolean newValue)
          Support for reporting bound property changes for boolean properties.
 void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, byte, byte) definition code for java.awt.Component.firePropertyChange(java.lang.String, byte, byte) (String sample code for java.lang.String definition code for java.lang.String  propertyName, byte oldValue, byte newValue)
          Reports a bound property change.
 void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, char, char) definition code for java.awt.Component.firePropertyChange(java.lang.String, char, char) (String sample code for java.lang.String definition code for java.lang.String  propertyName, char oldValue, char newValue)
          Reports a bound property change.
 void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, double, double) definition code for java.awt.Component.firePropertyChange(java.lang.String, double, double) (String sample code for java.lang.String definition code for java.lang.String  propertyName, double oldValue, double newValue)
          Reports a bound property change.
 void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, float, float) definition code for java.awt.Component.firePropertyChange(java.lang.String, float, float) (String sample code for java.lang.String definition code for java.lang.String  propertyName, float oldValue, float newValue)
          Reports a bound property change.
protected  void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, int, int) definition code for java.awt.Component.firePropertyChange(java.lang.String, int, int) (String sample code for java.lang.String definition code for java.lang.String  propertyName, int oldValue, int newValue)
          Support for reporting bound property changes for integer properties.
 void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, long, long) definition code for java.awt.Component.firePropertyChange(java.lang.String, long, long) (String sample code for java.lang.String definition code for java.lang.String  propertyName, long oldValue, long newValue)
          Reports a bound property change.
protected  void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) definition code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) (String sample code for java.lang.String definition code for java.lang.String  propertyName, Object sample code for java.lang.Object definition code for java.lang.Object  oldValue, Object sample code for java.lang.Object definition code for java.lang.Object  newValue)
          Support for reporting bound property changes for Object properties.
 void firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, short, short) definition code for java.awt.Component.firePropertyChange(java.lang.String, short, short) (String sample code for java.lang.String definition code for java.lang.String  propertyName, short oldValue, short newValue)
          Reports a bound property change.
 AccessibleContext sample code for javax.accessibility.AccessibleContext definition code for javax.accessibility.AccessibleContext getAccessibleContext sample code for java.awt.Component.getAccessibleContext() definition code for java.awt.Component.getAccessibleContext() ()
          Gets the AccessibleContext associated with this Component.
 float getAlignmentX sample code for java.awt.Component.getAlignmentX() definition code for java.awt.Component.getAlignmentX() ()
          Returns the alignment along the x axis.
 float getAlignmentY sample code for java.awt.Component.getAlignmentY() definition code for java.awt.Component.getAlignmentY() ()
          Returns the alignment along the y axis.
 Color sample code for java.awt.Color definition code for java.awt.Color getBackground sample code for java.awt.Component.getBackground() definition code for java.awt.Component.getBackground() ()
          Gets the background color of this component.
 Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle getBounds sample code for java.awt.Component.getBounds() definition code for java.awt.Component.getBounds() ()
          Gets the bounds of this component in the form of a Rectangle object.
 Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle getBounds sample code for java.awt.Component.getBounds(java.awt.Rectangle) definition code for java.awt.Component.getBounds(java.awt.Rectangle) (Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle  rv)
          Stores the bounds of this component into "return value" rv and return rv.
 ColorModel sample code for java.awt.image.ColorModel definition code for java.awt.image.ColorModel getColorModel sample code for java.awt.Component.getColorModel() definition code for java.awt.Component.getColorModel() ()
          Gets the instance of ColorModel used to display the component on the output device.
 Component sample code for java.awt.Component definition code for java.awt.Component getComponentAt sample code for java.awt.Component.getComponentAt(int, int) definition code for java.awt.Component.getComponentAt(int, int) (int x, int y)
          Determines if this component or one of its immediate subcomponents contains the (xy) location, and if so, returns the containing component.
 Component sample code for java.awt.Component definition code for java.awt.Component getComponentAt sample code for java.awt.Component.getComponentAt(java.awt.Point) definition code for java.awt.Component.getComponentAt(java.awt.Point) (Point sample code for java.awt.Point definition code for java.awt.Point  p)
          Returns the component or subcomponent that contains the specified point.
 ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener [] getComponentListeners sample code for java.awt.Component.getComponentListeners() definition code for java.awt.Component.getComponentListeners() ()
          Returns an array of all the component listeners registered on this component.
 ComponentOrientation sample code for java.awt.ComponentOrientation definition code for java.awt.ComponentOrientation getComponentOrientation sample code for java.awt.Component.getComponentOrientation() definition code for java.awt.Component.getComponentOrientation() ()
          Retrieves the language-sensitive orientation that is to be used to order the elements or text within this component.
 Cursor sample code for java.awt.Cursor definition code for java.awt.Cursor getCursor sample code for java.awt.Component.getCursor() definition code for java.awt.Component.getCursor() ()
          Gets the cursor set in the component.
 DropTarget sample code for java.awt.dnd.DropTarget definition code for java.awt.dnd.DropTarget getDropTarget sample code for java.awt.Component.getDropTarget() definition code for java.awt.Component.getDropTarget() ()
          Gets the DropTarget associated with this Component.
 Container sample code for java.awt.Container definition code for java.awt.Container getFocusCycleRootAncestor sample code for java.awt.Component.getFocusCycleRootAncestor() definition code for java.awt.Component.getFocusCycleRootAncestor() ()
          Returns the Container which is the focus cycle root of this Component's focus traversal cycle.
 FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener [] getFocusListeners sample code for java.awt.Component.getFocusListeners() definition code for java.awt.Component.getFocusListeners() ()
          Returns an array of all the focus listeners registered on this component.
 Set sample code for java.util.Set definition code for java.util.Set <AWTKeyStroke sample code for java.awt.AWTKeyStroke definition code for java.awt.AWTKeyStroke > getFocusTraversalKeys sample code for java.awt.Component.getFocusTraversalKeys(int) definition code for java.awt.Component.getFocusTraversalKeys(int) (int id)
          Returns the Set of focus traversal keys for a given traversal operation for this Component.
 boolean getFocusTraversalKeysEnabled sample code for java.awt.Component.getFocusTraversalKeysEnabled() definition code for java.awt.Component.getFocusTraversalKeysEnabled() ()
          Returns whether focus traversal keys are enabled for this Component.
 Font sample code for java.awt.Font definition code for java.awt.Font getFont sample code for java.awt.Component.getFont() definition code for java.awt.Component.getFont() ()
          Gets the font of this component.
 FontMetrics sample code for java.awt.FontMetrics definition code for java.awt.FontMetrics getFontMetrics sample code for java.awt.Component.getFontMetrics(java.awt.Font) definition code for java.awt.Component.getFontMetrics(java.awt.Font) (Font sample code for java.awt.Font definition code for java.awt.Font  font)
          Gets the font metrics for the specified font.
 Color sample code for java.awt.Color definition code for java.awt.Color getForeground sample code for java.awt.Component.getForeground() definition code for java.awt.Component.getForeground() ()
          Gets the foreground color of this component.
 Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics getGraphics sample code for java.awt.Component.getGraphics() definition code for java.awt.Component.getGraphics() ()
          Creates a graphics context for this component.
 GraphicsConfiguration sample code for java.awt.GraphicsConfiguration definition code for java.awt.GraphicsConfiguration getGraphicsConfiguration sample code for java.awt.Component.getGraphicsConfiguration() definition code for java.awt.Component.getGraphicsConfiguration() ()
          Gets the GraphicsConfiguration associated with this Component.
 int getHeight sample code for java.awt.Component.getHeight() definition code for java.awt.Component.getHeight() ()
          Returns the current height of this component.
 HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener [] getHierarchyBoundsListeners sample code for java.awt.Component.getHierarchyBoundsListeners() definition code for java.awt.Component.getHierarchyBoundsListeners() ()
          Returns an array of all the hierarchy bounds listeners registered on this component.
 HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener [] getHierarchyListeners sample code for java.awt.Component.getHierarchyListeners() definition code for java.awt.Component.getHierarchyListeners() ()
          Returns an array of all the hierarchy listeners registered on this component.
 boolean getIgnoreRepaint sample code for java.awt.Component.getIgnoreRepaint() definition code for java.awt.Component.getIgnoreRepaint() ()
           
 InputContext sample code for java.awt.im.InputContext definition code for java.awt.im.InputContext getInputContext sample code for java.awt.Component.getInputContext() definition code for java.awt.Component.getInputContext() ()
          Gets the input context used by this component for handling the communication with input methods when text is entered in this component.
 InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener [] getInputMethodListeners sample code for java.awt.Component.getInputMethodListeners() definition code for java.awt.Component.getInputMethodListeners() ()
          Returns an array of all the input method listeners registered on this component.
 InputMethodRequests sample code for java.awt.im.InputMethodRequests definition code for java.awt.im.InputMethodRequests getInputMethodRequests sample code for java.awt.Component.getInputMethodRequests() definition code for java.awt.Component.getInputMethodRequests() ()
          Gets the input method request handler which supports requests from input methods for this component.
 KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener [] getKeyListeners sample code for java.awt.Component.getKeyListeners() definition code for java.awt.Component.getKeyListeners() ()
          Returns an array of all the key listeners registered on this component.
<T extends EventListener sample code for java.util.EventListener definition code for java.util.EventListener >
T[]
getListeners sample code for java.awt.Component.getListeners(java.lang.Class) definition code for java.awt.Component.getListeners(java.lang.Class) (Class sample code for java.lang.Class definition code for java.lang.Class <T> listenerType)
          Returns an array of all the objects currently registered as FooListeners upon this Component.
 Locale sample code for java.util.Locale definition code for java.util.Locale getLocale sample code for java.awt.Component.getLocale() definition code for java.awt.Component.getLocale() ()
          Gets the locale of this component.
 Point sample code for java.awt.Point definition code for java.awt.Point getLocation sample code for java.awt.Component.getLocation() definition code for java.awt.Component.getLocation() ()
          Gets the location of this component in the form of a point specifying the component's top-left corner.
 Point sample code for java.awt.Point definition code for java.awt.Point getLocation sample code for java.awt.Component.getLocation(java.awt.Point) definition code for java.awt.Component.getLocation(java.awt.Point) (Point sample code for java.awt.Point definition code for java.awt.Point  rv)
          Stores the x,y origin of this component into "return value" rv and return rv.
 Point sample code for java.awt.Point definition code for java.awt.Point getLocationOnScreen sample code for java.awt.Component.getLocationOnScreen() definition code for java.awt.Component.getLocationOnScreen() ()
          Gets the location of this component in the form of a point specifying the component's top-left corner in the screen's coordinate space.
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension getMaximumSize sample code for java.awt.Component.getMaximumSize() definition code for java.awt.Component.getMaximumSize() ()
          Gets the maximum size of this component.
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension getMinimumSize sample code for java.awt.Component.getMinimumSize() definition code for java.awt.Component.getMinimumSize() ()
          Gets the mininimum size of this component.
 MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener [] getMouseListeners sample code for java.awt.Component.getMouseListeners() definition code for java.awt.Component.getMouseListeners() ()
          Returns an array of all the mouse listeners registered on this component.
 MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener [] getMouseMotionListeners sample code for java.awt.Component.getMouseMotionListeners() definition code for java.awt.Component.getMouseMotionListeners() ()
          Returns an array of all the mouse motion listeners registered on this component.
 Point sample code for java.awt.Point definition code for java.awt.Point getMousePosition sample code for java.awt.Component.getMousePosition() definition code for java.awt.Component.getMousePosition() ()
          Returns the position of the mouse pointer in this Component's coordinate space if the Component is directly under the mouse pointer, otherwise returns null.
 MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener [] getMouseWheelListeners sample code for java.awt.Component.getMouseWheelListeners() definition code for java.awt.Component.getMouseWheelListeners() ()
          Returns an array of all the mouse wheel listeners registered on this component.
 String sample code for java.lang.String definition code for java.lang.String getName sample code for java.awt.Component.getName() definition code for java.awt.Component.getName() ()
          Gets the name of the component.
 Container sample code for java.awt.Container definition code for java.awt.Container getParent sample code for java.awt.Component.getParent() definition code for java.awt.Component.getParent() ()
          Gets the parent of this component.
 ComponentPeer sample code for java.awt.peer.ComponentPeer definition code for java.awt.peer.ComponentPeer getPeer sample code for java.awt.Component.getPeer() definition code for java.awt.Component.getPeer() ()
          Deprecated. As of JDK version 1.1, programs should not directly manipulate peers; replaced by boolean isDisplayable().
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension getPreferredSize sample code for java.awt.Component.getPreferredSize() definition code for java.awt.Component.getPreferredSize() ()
          Gets the preferred size of this component.
 PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener [] getPropertyChangeListeners sample code for java.awt.Component.getPropertyChangeListeners() definition code for java.awt.Component.getPropertyChangeListeners() ()
          Returns an array of all the property change listeners registered on this component.
 PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener [] getPropertyChangeListeners sample code for java.awt.Component.getPropertyChangeListeners(java.lang.String) definition code for java.awt.Component.getPropertyChangeListeners(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  propertyName)
          Returns an array of all the listeners which have been associated with the named property.
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension getSize sample code for java.awt.Component.getSize() definition code for java.awt.Component.getSize() ()
          Returns the size of this component in the form of a Dimension object.
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension getSize sample code for java.awt.Component.getSize(java.awt.Dimension) definition code for java.awt.Component.getSize(java.awt.Dimension) (Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  rv)
          Stores the width/height of this component into "return value" rv and return rv.
 Toolkit sample code for java.awt.Toolkit definition code for java.awt.Toolkit getToolkit sample code for java.awt.Component.getToolkit() definition code for java.awt.Component.getToolkit() ()
          Gets the toolkit of this component.
 Object sample code for java.lang.Object definition code for java.lang.Object getTreeLock sample code for java.awt.Component.getTreeLock() definition code for java.awt.Component.getTreeLock() ()
          Gets this component's locking object (the object that owns the thread sychronization monitor) for AWT component-tree and layout operations.
 int getWidth sample code for java.awt.Component.getWidth() definition code for java.awt.Component.getWidth() ()
          Returns the current width of this component.
 int getX sample code for java.awt.Component.getX() definition code for java.awt.Component.getX() ()
          Returns the current x coordinate of the components origin.
 int getY sample code for java.awt.Component.getY() definition code for java.awt.Component.getY() ()
          Returns the current y coordinate of the components origin.
 boolean gotFocus sample code for java.awt.Component.gotFocus(java.awt.Event, java.lang.Object) definition code for java.awt.Component.gotFocus(java.awt.Event, java.lang.Object) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, Object sample code for java.lang.Object definition code for java.lang.Object  what)
          Deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent).
 boolean handleEvent sample code for java.awt.Component.handleEvent(java.awt.Event) definition code for java.awt.Component.handleEvent(java.awt.Event) (Event sample code for java.awt.Event definition code for java.awt.Event  evt)
          Deprecated. As of JDK version 1.1 replaced by processEvent(AWTEvent).
 boolean hasFocus sample code for java.awt.Component.hasFocus() definition code for java.awt.Component.hasFocus() ()
          Returns true if this Component is the focus owner.
 void hide sample code for java.awt.Component.hide() definition code for java.awt.Component.hide() ()
          Deprecated. As of JDK version 1.1, replaced by setVisible(boolean).
 boolean imageUpdate sample code for java.awt.Component.imageUpdate(java.awt.Image, int, int, int, int, int) definition code for java.awt.Component.imageUpdate(java.awt.Image, int, int, int, int, int) (Image sample code for java.awt.Image definition code for java.awt.Image  img, int infoflags, int x, int y, int w, int h)
          Repaints the component when the image has changed.
 boolean inside sample code for java.awt.Component.inside(int, int) definition code for java.awt.Component.inside(int, int) (int x, int y)
          Deprecated. As of JDK version 1.1, replaced by contains(int, int).
 void invalidate sample code for java.awt.Component.invalidate() definition code for java.awt.Component.invalidate() ()
          Invalidates this component.
 boolean isBackgroundSet sample code for java.awt.Component.isBackgroundSet() definition code for java.awt.Component.isBackgroundSet() ()
          Returns whether the background color has been explicitly set for this Component.
 boolean isCursorSet sample code for java.awt.Component.isCursorSet() definition code for java.awt.Component.isCursorSet() ()
          Returns whether the cursor has been explicitly set for this Component.
 boolean isDisplayable sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() ()
          Determines whether this component is displayable.
 boolean isDoubleBuffered sample code for java.awt.Component.isDoubleBuffered() definition code for java.awt.Component.isDoubleBuffered() ()
          Returns true if this component is painted to an offscreen image ("buffer") that's copied to the screen later.
 boolean isEnabled sample code for java.awt.Component.isEnabled() definition code for java.awt.Component.isEnabled() ()
          Determines whether this component is enabled.
 boolean isFocusable sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable() ()
          Returns whether this Component can be focused.
 boolean isFocusCycleRoot sample code for java.awt.Component.isFocusCycleRoot(java.awt.Container) definition code for java.awt.Component.isFocusCycleRoot(java.awt.Container) (Container sample code for java.awt.Container definition code for java.awt.Container  container)
          Returns whether the specified Container is the focus cycle root of this Component's focus traversal cycle.
 boolean isFocusOwner sample code for java.awt.Component.isFocusOwner() definition code for java.awt.Component.isFocusOwner() ()
          Returns true if this Component is the focus owner.
 boolean isFocusTraversable sample code for java.awt.Component.isFocusTraversable() definition code for java.awt.Component.isFocusTraversable() ()
          Deprecated. As of 1.4, replaced by isFocusable().
 boolean isFontSet sample code for java.awt.Component.isFontSet() definition code for java.awt.Component.isFontSet() ()
          Returns whether the font has been explicitly set for this Component.
 boolean isForegroundSet sample code for java.awt.Component.isForegroundSet() definition code for java.awt.Component.isForegroundSet() ()
          Returns whether the foreground color has been explicitly set for this Component.
 boolean isLightweight sample code for java.awt.Component.isLightweight() definition code for java.awt.Component.isLightweight() ()
          A lightweight component doesn't have a native toolkit peer.
 boolean isMaximumSizeSet sample code for java.awt.Component.isMaximumSizeSet() definition code for java.awt.Component.isMaximumSizeSet() ()
          Returns true if the maximum size has been set to a non-null value otherwise returns false.
 boolean isMinimumSizeSet sample code for java.awt.Component.isMinimumSizeSet() definition code for java.awt.Component.isMinimumSizeSet() ()
          Returns whether or not setMinimumSize has been invoked with a non-null value.
 boolean isOpaque sample code for java.awt.Component.isOpaque() definition code for java.awt.Component.isOpaque() ()
          Returns true if this component is completely opaque, returns false by default.
 boolean isPreferredSizeSet sample code for java.awt.Component.isPreferredSizeSet() definition code for java.awt.Component.isPreferredSizeSet() ()
          Returns true if the preferred size has been set to a non-null value otherwise returns false.
 boolean isShowing sample code for java.awt.Component.isShowing() definition code for java.awt.Component.isShowing() ()
          Determines whether this component is showing on screen.
 boolean isValid sample code for java.awt.Component.isValid() definition code for java.awt.Component.isValid() ()
          Determines whether this component is valid.
 boolean isVisible sample code for java.awt.Component.isVisible() definition code for java.awt.Component.isVisible() ()
          Determines whether this component should be visible when its parent is visible.
 boolean keyDown sample code for java.awt.Component.keyDown(java.awt.Event, int) definition code for java.awt.Component.keyDown(java.awt.Event, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int key)
          Deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent).
 boolean keyUp sample code for java.awt.Component.keyUp(java.awt.Event, int) definition code for java.awt.Component.keyUp(java.awt.Event, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int key)
          Deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent).
 void layout sample code for java.awt.Component.layout() definition code for java.awt.Component.layout() ()
          Deprecated. As of JDK version 1.1, replaced by doLayout().
 void list sample code for java.awt.Component.list() definition code for java.awt.Component.list() ()
          Prints a listing of this component to the standard system output stream System.out.
 void list sample code for java.awt.Component.list(java.io.PrintStream) definition code for java.awt.Component.list(java.io.PrintStream) (PrintStream sample code for java.io.PrintStream definition code for java.io.PrintStream  out)
          Prints a listing of this component to the specified output stream.
 void list sample code for java.awt.Component.list(java.io.PrintStream, int) definition code for java.awt.Component.list(java.io.PrintStream, int) (PrintStream sample code for java.io.PrintStream definition code for java.io.PrintStream  out, int indent)
          Prints out a list, starting at the specified indentation, to the specified print stream.
 void list sample code for java.awt.Component.list(java.io.PrintWriter) definition code for java.awt.Component.list(java.io.PrintWriter) (PrintWriter sample code for java.io.PrintWriter definition code for java.io.PrintWriter  out)
          Prints a listing to the specified print writer.
 void list sample code for java.awt.Component.list(java.io.PrintWriter, int) definition code for java.awt.Component.list(java.io.PrintWriter, int) (PrintWriter sample code for java.io.PrintWriter definition code for java.io.PrintWriter  out, int indent)
          Prints out a list, starting at the specified indentation, to the specified print writer.
 Component sample code for java.awt.Component definition code for java.awt.Component locate sample code for java.awt.Component.locate(int, int) definition code for java.awt.Component.locate(int, int) (int x, int y)
          Deprecated. As of JDK version 1.1, replaced by getComponentAt(int, int).
 Point sample code for java.awt.Point definition code for java.awt.Point location sample code for java.awt.Component.location() definition code for java.awt.Component.location() ()
          Deprecated. As of JDK version 1.1, replaced by getLocation().
 boolean lostFocus sample code for java.awt.Component.lostFocus(java.awt.Event, java.lang.Object) definition code for java.awt.Component.lostFocus(java.awt.Event, java.lang.Object) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, Object sample code for java.lang.Object definition code for java.lang.Object  what)
          Deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent).
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension minimumSize sample code for java.awt.Component.minimumSize() definition code for java.awt.Component.minimumSize() ()
          Deprecated. As of JDK version 1.1, replaced by getMinimumSize().
 boolean mouseDown sample code for java.awt.Component.mouseDown(java.awt.Event, int, int) definition code for java.awt.Component.mouseDown(java.awt.Event, int, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int x, int y)
          Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).
 boolean mouseDrag sample code for java.awt.Component.mouseDrag(java.awt.Event, int, int) definition code for java.awt.Component.mouseDrag(java.awt.Event, int, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int x, int y)
          Deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).
 boolean mouseEnter sample code for java.awt.Component.mouseEnter(java.awt.Event, int, int) definition code for java.awt.Component.mouseEnter(java.awt.Event, int, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int x, int y)
          Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).
 boolean mouseExit sample code for java.awt.Component.mouseExit(java.awt.Event, int, int) definition code for java.awt.Component.mouseExit(java.awt.Event, int, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int x, int y)
          Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).
 boolean mouseMove sample code for java.awt.Component.mouseMove(java.awt.Event, int, int) definition code for java.awt.Component.mouseMove(java.awt.Event, int, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int x, int y)
          Deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).
 boolean mouseUp sample code for java.awt.Component.mouseUp(java.awt.Event, int, int) definition code for java.awt.Component.mouseUp(java.awt.Event, int, int) (Event sample code for java.awt.Event definition code for java.awt.Event  evt, int x, int y)
          Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).
 void move sample code for java.awt.Component.move(int, int) definition code for java.awt.Component.move(int, int) (int x, int y)
          Deprecated. As of JDK version 1.1, replaced by setLocation(int, int).
 void nextFocus sample code for java.awt.Component.nextFocus() definition code for java.awt.Component.nextFocus() ()
          Deprecated. As of JDK version 1.1, replaced by transferFocus().
 void paint sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics) (Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
          Paints this component.
 void paintAll sample code for java.awt.Component.paintAll(java.awt.Graphics) definition code for java.awt.Component.paintAll(java.awt.Graphics) (Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
          Paints this component and all of its subcomponents.
protected  String sample code for java.lang.String definition code for java.lang.String paramString sample code for java.awt.Component.paramString() definition code for java.awt.Component.paramString() ()
          Returns a string representing the state of this component.
 boolean postEvent sample code for java.awt.Component.postEvent(java.awt.Event) definition code for java.awt.Component.postEvent(java.awt.Event) (Event sample code for java.awt.Event definition code for java.awt.Event  e)
          Deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent).
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension preferredSize sample code for java.awt.Component.preferredSize() definition code for java.awt.Component.preferredSize() ()
          Deprecated. As of JDK version 1.1, replaced by getPreferredSize().
 boolean prepareImage sample code for java.awt.Component.prepareImage(java.awt.Image, java.awt.image.ImageObserver) definition code for java.awt.Component.prepareImage(java.awt.Image, java.awt.image.ImageObserver) (Image sample code for java.awt.Image definition code for java.awt.Image  image, ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
          Prepares an image for rendering on this component.
 boolean prepareImage sample code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver) (Image sample code for java.awt.Image definition code for java.awt.Image  image, int width, int height, ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
          Prepares an image for rendering on this component at the specified width and height.
 void print sample code for java.awt.Component.print(java.awt.Graphics) definition code for java.awt.Component.print(java.awt.Graphics) (Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
          Prints this component.
 void printAll sample code for java.awt.Component.printAll(java.awt.Graphics) definition code for java.awt.Component.printAll(java.awt.Graphics) (Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
          Prints this component and all of its subcomponents.
protected  void processComponentEvent sample code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent) definition code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent) (ComponentEvent sample code for java.awt.event.ComponentEvent definition code for java.awt.event.ComponentEvent  e)
          Processes component events occurring on this component by dispatching them to any registered ComponentListener objects.
protected  void processEvent sample code for java.awt.Component.processEvent(java.awt.AWTEvent) definition code for java.awt.Component.processEvent(java.awt.AWTEvent) (AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  e)
          Processes events occurring on this component.
protected  void processFocusEvent sample code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent) definition code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent) (FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent  e)
          Processes focus events occurring on this component by dispatching them to any registered FocusListener objects.
protected  void processHierarchyBoundsEvent sample code for java.awt.Component.processHierarchyBoundsEvent(java.awt.event.HierarchyEvent) definition code for java.awt.Component.processHierarchyBoundsEvent(java.awt.event.HierarchyEvent) (HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent  e)
          Processes hierarchy bounds events occurring on this component by dispatching them to any registered HierarchyBoundsListener objects.
protected  void processHierarchyEvent sample code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent) definition code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent) (HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent  e)
          Processes hierarchy events occurring on this component by dispatching them to any registered HierarchyListener objects.
protected  void processInputMethodEvent sample code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent) definition code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent) (InputMethodEvent sample code for java.awt.event.InputMethodEvent definition code for java.awt.event.InputMethodEvent  e)
          Processes input method events occurring on this component by dispatching them to any registered InputMethodListener objects.
protected  void processKeyEvent sample code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) definition code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) (KeyEvent sample code for java.awt.event.KeyEvent definition code for java.awt.event.KeyEvent  e)
          Processes key events occurring on this component by dispatching them to any registered KeyListener objects.
protected  void processMouseEvent sample code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) (MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent  e)
          Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects.
protected  void processMouseMotionEvent sample code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent) (MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent  e)
          Processes mouse motion events occurring on this component by dispatching them to any registered MouseMotionListener objects.
protected  void processMouseWheelEvent sample code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent) definition code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent) (MouseWheelEvent sample code for java.awt.event.MouseWheelEvent definition code for java.awt.event.MouseWheelEvent  e)
          Processes mouse wheel events occurring on this component by dispatching them to any registered MouseWheelListener objects.
 void remove sample code for java.awt.Component.remove(java.awt.MenuComponent) definition code for java.awt.Component.remove(java.awt.MenuComponent) (MenuComponent sample code for java.awt.MenuComponent definition code for java.awt.MenuComponent  popup)
          Removes the specified popup menu from the component.
 void removeComponentListener sample code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) (ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener  l)
          Removes the specified component listener so that it no longer receives component events from this component.
 void removeFocusListener sample code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) (FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener  l)
          Removes the specified focus listener so that it no longer receives focus events from this component.
 void removeHierarchyBoundsListener sample code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) (HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener  l)
          Removes the specified hierarchy bounds listener so that it no longer receives hierarchy bounds events from this component.
 void removeHierarchyListener sample code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) (HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener  l)
          Removes the specified hierarchy listener so that it no longer receives hierarchy changed events from this component.
 void removeInputMethodListener sample code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) (InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener  l)
          Removes the specified input method listener so that it no longer receives input method events from this component.
 void removeKeyListener sample code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) (KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener  l)
          Removes the specified key listener so that it no longer receives key events from this component.
 void removeMouseListener sample code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) (MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener  l)
          Removes the specified mouse listener so that it no longer receives mouse events from this component.
 void removeMouseMotionListener sample code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) (MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener  l)
          Removes the specified mouse motion listener so that it no longer receives mouse motion events from this component.
 void removeMouseWheelListener sample code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) (MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener  l)
          Removes the specified mouse wheel listener so that it no longer receives mouse wheel events from this component.
 void removeNotify sample code for java.awt.Component.removeNotify() definition code for java.awt.Component.removeNotify() ()
          Makes this Component undisplayable by destroying it native screen resource.
 void removePropertyChangeListener sample code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) (PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
          Removes a PropertyChangeListener from the listener list.
 void removePropertyChangeListener sample code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) (String sample code for java.lang.String definition code for java.lang.String  propertyName, PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
          Removes a PropertyChangeListener from the listener list for a specific property.
 void repaint sample code for java.awt.Component.repaint() definition code for java.awt.Component.repaint() ()
          Repaints this component.
 void repaint sample code for java.awt.Component.repaint(int, int, int, int) definition code for java.awt.Component.repaint(int, int, int, int) (int x, int y, int width, int height)
          Repaints the specified rectangle of this component.
 void repaint sample code for java.awt.Component.repaint(long) definition code for java.awt.Component.repaint(long) (long tm)
          Repaints the component.
 void repaint sample code for java.awt.Component.repaint(long, int, int, int, int) definition code for java.awt.Component.repaint(long, int, int, int, int) (long tm, int x, int y, int width, int height)
          Repaints the specified rectangle of this component within tm milliseconds.
 void requestFocus sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus() ()
          Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window.
protected  boolean requestFocus sample code for java.awt.Component.requestFocus(boolean) definition code for java.awt.Component.requestFocus(boolean) (boolean temporary)
          Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window.
 boolean requestFocusInWindow sample code for java.awt.Component.requestFocusInWindow() definition code for java.awt.Component.requestFocusInWindow() ()
          Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window.
protected  boolean requestFocusInWindow sample code for java.awt.Component.requestFocusInWindow(boolean) definition code for java.awt.Component.requestFocusInWindow(boolean) (boolean temporary)
          Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window.
 void reshape sample code for java.awt.Component.reshape(int, int, int, int) definition code for java.awt.Component.reshape(int, int, int, int) (int x, int y, int width, int height)
          Deprecated. As of JDK version 1.1, replaced by setBounds(int, int, int, int).
 void resize sample code for java.awt.Component.resize(java.awt.Dimension) definition code for java.awt.Component.resize(java.awt.Dimension) (Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  d)
          Deprecated. As of JDK version 1.1, replaced by setSize(Dimension).
 void resize sample code for java.awt.Component.resize(int, int) definition code for java.awt.Component.resize(int, int) (int width, int height)
          Deprecated. As of JDK version 1.1, replaced by setSize(int, int).
 void setBackground sample code for java.awt.Component.setBackground(java.awt.Color) definition code for java.awt.Component.setBackground(java.awt.Color) (Color sample code for java.awt.Color definition code for java.awt.Color  c)
          Sets the background color of this component.
 void setBounds sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.setBounds(int, int, int, int) (int x, int y, int width, int height)
          Moves and resizes this component.
 void setBounds sample code for java.awt.Component.setBounds(java.awt.Rectangle) definition code for java.awt.Component.setBounds(java.awt.Rectangle) (Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle  r)
          Moves and resizes this component to conform to the new bounding rectangle r.
 void setComponentOrientation sample code for java.awt.Component.setComponentOrientation(java.awt.ComponentOrientation) definition code for java.awt.Component.setComponentOrientation(java.awt.ComponentOrientation) (ComponentOrientation sample code for java.awt.ComponentOrientation definition code for java.awt.ComponentOrientation  o)
          Sets the language-sensitive orientation that is to be used to order the elements or text within this component.
 void setCursor sample code for java.awt.Component.setCursor(java.awt.Cursor) definition code for java.awt.Component.setCursor(java.awt.Cursor) (Cursor sample code for java.awt.Cursor definition code for java.awt.Cursor  cursor)
          Sets the cursor image to the specified cursor.
 void setDropTarget sample code for java.awt.Component.setDropTarget(java.awt.dnd.DropTarget) definition code for java.awt.Component.setDropTarget(java.awt.dnd.DropTarget) (DropTarget sample code for java.awt.dnd.DropTarget definition code for java.awt.dnd.DropTarget  dt)
          Associate a DropTarget with this component.
 void setEnabled sample code for java.awt.Component.setEnabled(boolean) definition code for java.awt.Component.setEnabled(boolean) (boolean b)
          Enables or disables this component, depending on the value of the parameter b.
 void setFocusable sample code for java.awt.Component.setFocusable(boolean) definition code for java.awt.Component.setFocusable(boolean) (boolean focusable)
          Sets the focusable state of this Component to the specified value.
 void setFocusTraversalKeys sample code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) definition code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) (int id, Set sample code for java.util.Set definition code for java.util.Set <? extends AWTKeyStroke sample code for java.awt.AWTKeyStroke definition code for java.awt.AWTKeyStroke > keystrokes)
          Sets the focus traversal keys for a given traversal operation for this Component.
 void setFocusTraversalKeysEnabled sample code for java.awt.Component.setFocusTraversalKeysEnabled(boolean) definition code for java.awt.Component.setFocusTraversalKeysEnabled(boolean) (boolean focusTraversalKeysEnabled)
          Sets whether focus traversal keys are enabled for this Component.
 void setFont sample code for java.awt.Component.setFont(java.awt.Font) definition code for java.awt.Component.setFont(java.awt.Font) (Font sample code for java.awt.Font definition code for java.awt.Font  f)
          Sets the font of this component.
 void setForeground sample code for java.awt.Component.setForeground(java.awt.Color) definition code for java.awt.Component.setForeground(java.awt.Color) (Color sample code for java.awt.Color definition code for java.awt.Color  c)
          Sets the foreground color of this component.
 void setIgnoreRepaint sample code for java.awt.Component.setIgnoreRepaint(boolean) definition code for java.awt.Component.setIgnoreRepaint(boolean) (boolean ignoreRepaint)
          Sets whether or not paint messages received from the operating system should be ignored.
 void setLocale sample code for java.awt.Component.setLocale(java.util.Locale) definition code for java.awt.Component.setLocale(java.util.Locale) (Locale sample code for java.util.Locale definition code for java.util.Locale  l)
          Sets the locale of this component.
 void setLocation sample code for java.awt.Component.setLocation(int, int) definition code for java.awt.Component.setLocation(int, int) (int x, int y)
          Moves this component to a new location.
 void setLocation sample code for java.awt.Component.setLocation(java.awt.Point) definition code for java.awt.Component.setLocation(java.awt.Point) (Point sample code for java.awt.Point definition code for java.awt.Point  p)
          Moves this component to a new location.
 void setMaximumSize sample code for java.awt.Component.setMaximumSize(java.awt.Dimension) definition code for java.awt.Component.setMaximumSize(java.awt.Dimension) (Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  maximumSize)
          Sets the maximum size of this component to a constant value.
 void setMinimumSize sample code for java.awt.Component.setMinimumSize(java.awt.Dimension) definition code for java.awt.Component.setMinimumSize(java.awt.Dimension) (Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  minimumSize)
          Sets the minimum size of this component to a constant value.
 void setName sample code for java.awt.Component.setName(java.lang.String) definition code for java.awt.Component.setName(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  name)
          Sets the name of the component to the specified string.
 void setPreferredSize sample code for java.awt.Component.setPreferredSize(java.awt.Dimension) definition code for java.awt.Component.setPreferredSize(java.awt.Dimension) (Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  preferredSize)
          Sets the preferred size of this component to a constant value.
 void setSize sample code for java.awt.Component.setSize(java.awt.Dimension) definition code for java.awt.Component.setSize(java.awt.Dimension) (Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  d)
          Resizes this component so that it has width d.width and height d.height.
 void setSize sample code for java.awt.Component.setSize(int, int) definition code for java.awt.Component.setSize(int, int) (int width, int height)
          Resizes this component so that it has width width and height height.
 void setVisible sample code for java.awt.Component.setVisible(boolean) definition code for java.awt.Component.setVisible(boolean) (boolean b)
          Shows or hides this component depending on the value of parameter b.
 void show sample code for java.awt.Component.show() definition code for java.awt.Component.show() ()
          Deprecated. As of JDK version 1.1, replaced by setVisible(boolean).
 void show sample code for java.awt.Component.show(boolean) definition code for java.awt.Component.show(boolean) (boolean b)
          Deprecated. As of JDK version 1.1, replaced by setVisible(boolean).
 Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension size sample code for java.awt.Component.size() definition code for java.awt.Component.size() ()
          Deprecated. As of JDK version 1.1, replaced by getSize().
 String sample code for java.lang.String definition code for java.lang.String toString sample code for java.awt.Component.toString() definition code for java.awt.Component.toString() ()
          Returns a string representation of this component and its values.
 void transferFocus sample code for java.awt.Component.transferFocus() definition code for java.awt.Component.transferFocus() ()
          Transfers the focus to the next component, as though this Component were the focus owner.
 void transferFocusBackward sample code for java.awt.Component.transferFocusBackward() definition code for java.awt.Component.transferFocusBackward() ()
          Transfers the focus to the previous component, as though this Component were the focus owner.
 void transferFocusUpCycle sample code for java.awt.Component.transferFocusUpCycle() definition code for java.awt.Component.transferFocusUpCycle() ()
          Transfers the focus up one focus traversal cycle.
 void update sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics) (Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
          Updates this component.
 void validate sample code for java.awt.Component.validate() definition code for java.awt.Component.validate() ()
          Ensures that this component has a valid layout.
 
Methods inherited from class java.lang.Object sample code for java.lang.Object definition code for java.lang.Object
clone sample code for java.lang.Object.clone() definition code for java.lang.Object.clone() , equals sample code for java.lang.Object.equals(java.lang.Object) definition code for java.lang.Object.equals(java.lang.Object) , finalize sample code for java.lang.Object.finalize() definition code for java.lang.Object.finalize() , getClass sample code for java.lang.Object.getClass() definition code for java.lang.Object.getClass() , hashCode sample code for java.lang.Object.hashCode() definition code for java.lang.Object.hashCode() , notify sample code for java.lang.Object.notify() definition code for java.lang.Object.notify() , notifyAll sample code for java.lang.Object.notifyAll() definition code for java.lang.Object.notifyAll() , wait sample code for java.lang.Object.wait() definition code for java.lang.Object.wait() , wait sample code for java.lang.Object.wait(long) definition code for java.lang.Object.wait(long) , wait sample code for java.lang.Object.wait(long, int) definition code for java.lang.Object.wait(long, int)
 

Field Detail

TOP_ALIGNMENT sample code for java.awt.Component.TOP_ALIGNMENT

public static final float TOP_ALIGNMENT
Ease-of-use constant for getAlignmentY(). Specifies an alignment to the top of the component.

See Also:
getAlignmentY() sample code for java.awt.Component.getAlignmentY() definition code for java.awt.Component.getAlignmentY() , Constant Field Values

CENTER_ALIGNMENT sample code for java.awt.Component.CENTER_ALIGNMENT

public static final float CENTER_ALIGNMENT
Ease-of-use constant for getAlignmentY and getAlignmentX. Specifies an alignment to the center of the component

See Also:
getAlignmentX() sample code for java.awt.Component.getAlignmentX() definition code for java.awt.Component.getAlignmentX() , getAlignmentY() sample code for java.awt.Component.getAlignmentY() definition code for java.awt.Component.getAlignmentY() , Constant Field Values

BOTTOM_ALIGNMENT sample code for java.awt.Component.BOTTOM_ALIGNMENT

public static final float BOTTOM_ALIGNMENT
Ease-of-use constant for getAlignmentY. Specifies an alignment to the bottom of the component.

See Also:
getAlignmentY() sample code for java.awt.Component.getAlignmentY() definition code for java.awt.Component.getAlignmentY() , Constant Field Values

LEFT_ALIGNMENT sample code for java.awt.Component.LEFT_ALIGNMENT

public static final float LEFT_ALIGNMENT
Ease-of-use constant for getAlignmentX. Specifies an alignment to the left side of the component.

See Also:
getAlignmentX() sample code for java.awt.Component.getAlignmentX() definition code for java.awt.Component.getAlignmentX() , Constant Field Values

RIGHT_ALIGNMENT sample code for java.awt.Component.RIGHT_ALIGNMENT

public static final float RIGHT_ALIGNMENT
Ease-of-use constant for getAlignmentX. Specifies an alignment to the right side of the component.

See Also:
getAlignmentX() sample code for java.awt.Component.getAlignmentX() definition code for java.awt.Component.getAlignmentX() , Constant Field Values
Constructor Detail

Component sample code for java.awt.Component() definition code for java.awt.Component()

protected Component()
Constructs a new component. Class Component can be extended directly to create a lightweight component that does not utilize an opaque native window. A lightweight component must be hosted by a native container somewhere higher up in the component tree (for example, by a Frame object).

Method Detail

getName sample code for java.awt.Component.getName() definition code for java.awt.Component.getName()

public String sample code for java.lang.String definition code for java.lang.String  getName()
Gets the name of the component.

Returns:
this component's name
Since:
JDK1.1
See Also:
setName(java.lang.String) sample code for java.awt.Component.setName(java.lang.String) definition code for java.awt.Component.setName(java.lang.String)

setName sample code for java.awt.Component.setName(java.lang.String) definition code for java.awt.Component.setName(java.lang.String)

public void setName(String sample code for java.lang.String definition code for java.lang.String  name)
Sets the name of the component to the specified string.

Parameters:
name - the string that is to be this component's name
Since:
JDK1.1
See Also:
getName() sample code for java.awt.Component.getName() definition code for java.awt.Component.getName()

getParent sample code for java.awt.Component.getParent() definition code for java.awt.Component.getParent()

public Container sample code for java.awt.Container definition code for java.awt.Container  getParent()
Gets the parent of this component.

Returns:
the parent container of this component
Since:
JDK1.0

getPeer sample code for java.awt.Component.getPeer() definition code for java.awt.Component.getPeer()

@Deprecated
public ComponentPeer sample code for java.awt.peer.ComponentPeer definition code for java.awt.peer.ComponentPeer  getPeer()
Deprecated. As of JDK version 1.1, programs should not directly manipulate peers; replaced by boolean isDisplayable().


setDropTarget sample code for java.awt.Component.setDropTarget(java.awt.dnd.DropTarget) definition code for java.awt.Component.setDropTarget(java.awt.dnd.DropTarget)

public void setDropTarget(DropTarget sample code for java.awt.dnd.DropTarget definition code for java.awt.dnd.DropTarget  dt)
Associate a DropTarget with this component. The Component will receive drops only if it is enabled.

Parameters:
dt - The DropTarget
See Also:
isEnabled() sample code for java.awt.Component.isEnabled() definition code for java.awt.Component.isEnabled()

getDropTarget sample code for java.awt.Component.getDropTarget() definition code for java.awt.Component.getDropTarget()

public DropTarget sample code for java.awt.dnd.DropTarget definition code for java.awt.dnd.DropTarget  getDropTarget()
Gets the DropTarget associated with this Component.


getGraphicsConfiguration sample code for java.awt.Component.getGraphicsConfiguration() definition code for java.awt.Component.getGraphicsConfiguration()

public GraphicsConfiguration sample code for java.awt.GraphicsConfiguration definition code for java.awt.GraphicsConfiguration  getGraphicsConfiguration()
Gets the GraphicsConfiguration associated with this Component. If the Component has not been assigned a specific GraphicsConfiguration, the GraphicsConfiguration of the Component object's top-level container is returned. If the Component has been created, but not yet added to a Container, this method returns null.

Returns:
the GraphicsConfiguration used by this Component or null
Since:
1.3

getTreeLock sample code for java.awt.Component.getTreeLock() definition code for java.awt.Component.getTreeLock()

public final Object sample code for java.lang.Object definition code for java.lang.Object  getTreeLock()
Gets this component's locking object (the object that owns the thread sychronization monitor) for AWT component-tree and layout operations.

Returns:
this component's locking object

getToolkit sample code for java.awt.Component.getToolkit() definition code for java.awt.Component.getToolkit()

public Toolkit sample code for java.awt.Toolkit definition code for java.awt.Toolkit  getToolkit()
Gets the toolkit of this component. Note that the frame that contains a component controls which toolkit is used by that component. Therefore if the component is moved from one frame to another, the toolkit it uses may change.

Returns:
the toolkit of this component
Since:
JDK1.0

isValid sample code for java.awt.Component.isValid() definition code for java.awt.Component.isValid()

public boolean isValid()
Determines whether this component is valid. A component is valid when it is correctly sized and positioned within its parent container and all its children are also valid. In order to account for peers' size requirements, components are invalidated before they are first shown on the screen. By the time the parent container is fully realized, all its components will be valid.

Returns:
true if the component is valid, false otherwise
Since:
JDK1.0
See Also:
validate() sample code for java.awt.Component.validate() definition code for java.awt.Component.validate() , invalidate() sample code for java.awt.Component.invalidate() definition code for java.awt.Component.invalidate()

isDisplayable sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable()

public boolean isDisplayable()
Determines whether this component is displayable. A component is displayable when it is connected to a native screen resource.

A component is made displayable either when it is added to a displayable containment hierarchy or when its containment hierarchy is made displayable. A containment hierarchy is made displayable when its ancestor window is either packed or made visible.

A component is made undisplayable either when it is removed from a displayable containment hierarchy or when its containment hierarchy is made undisplayable. A containment hierarchy is made undisplayable when its ancestor window is disposed.

Returns:
true if the component is displayable, false otherwise
Since:
1.2
See Also:
Container.add(Component) sample code for java.awt.Container.add(java.awt.Component) definition code for java.awt.Container.add(java.awt.Component) , Window.pack() sample code for java.awt.Window.pack() definition code for java.awt.Window.pack() , Window.show() sample code for java.awt.Window.show() definition code for java.awt.Window.show() , Container.remove(Component) sample code for java.awt.Container.remove(java.awt.Component) definition code for java.awt.Container.remove(java.awt.Component) , Window.dispose() sample code for java.awt.Window.dispose() definition code for java.awt.Window.dispose()

isVisible sample code for java.awt.Component.isVisible() definition code for java.awt.Component.isVisible()

public boolean isVisible()
Determines whether this component should be visible when its parent is visible. Components are initially visible, with the exception of top level components such as Frame objects.

Returns:
true if the component is visible, false otherwise
Since:
JDK1.0
See Also:
setVisible(boolean) sample code for java.awt.Component.setVisible(boolean) definition code for java.awt.Component.setVisible(boolean)

getMousePosition sample code for java.awt.Component.getMousePosition() definition code for java.awt.Component.getMousePosition()

public Point sample code for java.awt.Point definition code for java.awt.Point  getMousePosition()
                       throws HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException 
Returns the position of the mouse pointer in this Component's coordinate space if the Component is directly under the mouse pointer, otherwise returns null. If the Component is not showing on the screen, this method returns null even if the mouse pointer is above the area where the Component would be displayed. If the Component is partially or fully obscured by other Components or native windows, this method returns a non-null value only if the mouse pointer is located above the unobscured part of the Component.

For Containers it returns a non-null value if the mouse is above the Container itself or above any of its descendants. Use Container.getMousePosition(boolean) sample code for java.awt.Container.getMousePosition(boolean) definition code for java.awt.Container.getMousePosition(boolean) if you need to exclude children.

Sometimes the exact mouse coordinates are not important, and the only thing that matters is whether a specific Component is under the mouse pointer. If the return value of this method is null, mouse pointer is not directly above the Component.

Returns:
mouse coordinates relative to this Component, or null
Throws:
HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException - if GraphicsEnvironment.isHeadless() returns true
Since:
1.5
See Also:
isShowing() sample code for java.awt.Component.isShowing() definition code for java.awt.Component.isShowing() , Container.getMousePosition(boolean) sample code for java.awt.Container.getMousePosition(boolean) definition code for java.awt.Container.getMousePosition(boolean)

isShowing sample code for java.awt.Component.isShowing() definition code for java.awt.Component.isShowing()

public boolean isShowing()
Determines whether this component is showing on screen. This means that the component must be visible, and it must be in a container that is visible and showing.

Returns:
true if the component is showing, false otherwise
Since:
JDK1.0
See Also:
setVisible(boolean) sample code for java.awt.Component.setVisible(boolean) definition code for java.awt.Component.setVisible(boolean)

isEnabled sample code for java.awt.Component.isEnabled() definition code for java.awt.Component.isEnabled()

public boolean isEnabled()
Determines whether this component is enabled. An enabled component can respond to user input and generate events. Components are enabled initially by default. A component may be enabled or disabled by calling its setEnabled method.

Returns:
true if the component is enabled, false otherwise
Since:
JDK1.0
See Also:
setEnabled(boolean) sample code for java.awt.Component.setEnabled(boolean) definition code for java.awt.Component.setEnabled(boolean)

setEnabled sample code for java.awt.Component.setEnabled(boolean) definition code for java.awt.Component.setEnabled(boolean)

public void setEnabled(boolean b)
Enables or disables this component, depending on the value of the parameter b. An enabled component can respond to user input and generate events. Components are enabled initially by default.

Note: Disabling a lightweight component does not prevent it from receiving MouseEvents.

Parameters:
b - If true, this component is enabled; otherwise this component is disabled
Since:
JDK1.1
See Also:
isEnabled() sample code for java.awt.Component.isEnabled() definition code for java.awt.Component.isEnabled() , isLightweight() sample code for java.awt.Component.isLightweight() definition code for java.awt.Component.isLightweight()

enable sample code for java.awt.Component.enable() definition code for java.awt.Component.enable()

@Deprecated
public void enable()
Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).


enable sample code for java.awt.Component.enable(boolean) definition code for java.awt.Component.enable(boolean)

@Deprecated
public void enable(boolean b)
Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).


disable sample code for java.awt.Component.disable() definition code for java.awt.Component.disable()

@Deprecated
public void disable()
Deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).


isDoubleBuffered sample code for java.awt.Component.isDoubleBuffered() definition code for java.awt.Component.isDoubleBuffered()

public boolean isDoubleBuffered()
Returns true if this component is painted to an offscreen image ("buffer") that's copied to the screen later. Component subclasses that support double buffering should override this method to return true if double buffering is enabled.

Returns:
false by default

enableInputMethods sample code for java.awt.Component.enableInputMethods(boolean) definition code for java.awt.Component.enableInputMethods(boolean)

public void enableInputMethods(boolean enable)
Enables or disables input method support for this component. If input method support is enabled and the component also processes key events, incoming events are offered to the current input method and will only be processed by the component or dispatched to its listeners if the input method does not consume them. By default, input method support is enabled.

Parameters:
enable - true to enable, false to disable
Since:
1.2
See Also:
processKeyEvent(java.awt.event.KeyEvent) sample code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) definition code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent)

setVisible sample code for java.awt.Component.setVisible(boolean) definition code for java.awt.Component.setVisible(boolean)

public void setVisible(boolean b)
Shows or hides this component depending on the value of parameter b.

Parameters:
b - if true, shows this component; otherwise, hides this component
Since:
JDK1.1
See Also:
isVisible() sample code for java.awt.Component.isVisible() definition code for java.awt.Component.isVisible()

show sample code for java.awt.Component.show() definition code for java.awt.Component.show()

@Deprecated
public void show()
Deprecated. As of JDK version 1.1, replaced by setVisible(boolean).


show sample code for java.awt.Component.show(boolean) definition code for java.awt.Component.show(boolean)

@Deprecated
public void show(boolean b)
Deprecated. As of JDK version 1.1, replaced by setVisible(boolean).


hide sample code for java.awt.Component.hide() definition code for java.awt.Component.hide()

@Deprecated
public void hide()
Deprecated. As of JDK version 1.1, replaced by setVisible(boolean).


getForeground sample code for java.awt.Component.getForeground() definition code for java.awt.Component.getForeground()

public Color sample code for java.awt.Color definition code for java.awt.Color  getForeground()
Gets the foreground color of this component.

Returns:
this component's foreground color; if this component does not have a foreground color, the foreground color of its parent is returned
Since:
JDK1.0
See Also:
setForeground(java.awt.Color) sample code for java.awt.Component.setForeground(java.awt.Color) definition code for java.awt.Component.setForeground(java.awt.Color)

setForeground sample code for java.awt.Component.setForeground(java.awt.Color) definition code for java.awt.Component.setForeground(java.awt.Color)

public void setForeground(Color sample code for java.awt.Color definition code for java.awt.Color  c)
Sets the foreground color of this component.

Parameters:
c - the color to become this component's foreground color; if this parameter is null then this component will inherit the foreground color of its parent
Since:
JDK1.0
See Also:
getForeground() sample code for java.awt.Component.getForeground() definition code for java.awt.Component.getForeground()

isForegroundSet sample code for java.awt.Component.isForegroundSet() definition code for java.awt.Component.isForegroundSet()

public boolean isForegroundSet()
Returns whether the foreground color has been explicitly set for this Component. If this method returns false, this Component is inheriting its foreground color from an ancestor.

Returns:
true if the foreground color has been explicitly set for this Component; false otherwise.
Since:
1.4

getBackground sample code for java.awt.Component.getBackground() definition code for java.awt.Component.getBackground()

public Color sample code for java.awt.Color definition code for java.awt.Color  getBackground()
Gets the background color of this component.

Returns:
this component's background color; if this component does not have a background color, the background color of its parent is returned
Since:
JDK1.0
See Also:
setBackground(java.awt.Color) sample code for java.awt.Component.setBackground(java.awt.Color) definition code for java.awt.Component.setBackground(java.awt.Color)

setBackground sample code for java.awt.Component.setBackground(java.awt.Color) definition code for java.awt.Component.setBackground(java.awt.Color)

public void setBackground(Color sample code for java.awt.Color definition code for java.awt.Color  c)
Sets the background color of this component.

The background color affects each component differently and the parts of the component that are affected by the background color may differ between operating systems.

Parameters:
c - the color to become this component's color; if this parameter is null, then this component will inherit the background color of its parent
Since:
JDK1.0
See Also:
getBackground() sample code for java.awt.Component.getBackground() definition code for java.awt.Component.getBackground()

isBackgroundSet sample code for java.awt.Component.isBackgroundSet() definition code for java.awt.Component.isBackgroundSet()

public boolean isBackgroundSet()
Returns whether the background color has been explicitly set for this Component. If this method returns false, this Component is inheriting its background color from an ancestor.

Returns:
true if the background color has been explicitly set for this Component; false otherwise.
Since:
1.4

getFont sample code for java.awt.Component.getFont() definition code for java.awt.Component.getFont()

public Font sample code for java.awt.Font definition code for java.awt.Font  getFont()
Gets the font of this component.

Specified by:
getFont sample code for java.awt.MenuContainer.getFont() definition code for java.awt.MenuContainer.getFont() in interface MenuContainer sample code for java.awt.MenuContainer definition code for java.awt.MenuContainer
Returns:
this component's font; if a font has not been set for this component, the font of its parent is returned
Since:
JDK1.0
See Also:
setFont(java.awt.Font) sample code for java.awt.Component.setFont(java.awt.Font) definition code for java.awt.Component.setFont(java.awt.Font)

setFont sample code for java.awt.Component.setFont(java.awt.Font) definition code for java.awt.Component.setFont(java.awt.Font)

public void setFont(Font sample code for java.awt.Font definition code for java.awt.Font  f)
Sets the font of this component.

Parameters:
f - the font to become this component's font; if this parameter is null then this component will inherit the font of its parent
Since:
JDK1.0
See Also:
getFont() sample code for java.awt.Component.getFont() definition code for java.awt.Component.getFont()

isFontSet sample code for java.awt.Component.isFontSet() definition code for java.awt.Component.isFontSet()

public boolean isFontSet()
Returns whether the font has been explicitly set for this Component. If this method returns false, this Component is inheriting its font from an ancestor.

Returns:
true if the font has been explicitly set for this Component; false otherwise.
Since:
1.4

getLocale sample code for java.awt.Component.getLocale() definition code for java.awt.Component.getLocale()

public Locale sample code for java.util.Locale definition code for java.util.Locale  getLocale()
Gets the locale of this component.

Returns:
this component's locale; if this component does not have a locale, the locale of its parent is returned
Throws:
IllegalComponentStateException sample code for java.awt.IllegalComponentStateException definition code for java.awt.IllegalComponentStateException - if the Component does not have its own locale and has not yet been added to a containment hierarchy such that the locale can be determined from the containing parent
Since:
JDK1.1
See Also:
setLocale(java.util.Locale) sample code for java.awt.Component.setLocale(java.util.Locale) definition code for java.awt.Component.setLocale(java.util.Locale)

setLocale sample code for java.awt.Component.setLocale(java.util.Locale) definition code for java.awt.Component.setLocale(java.util.Locale)

public void setLocale(Locale sample code for java.util.Locale definition code for java.util.Locale  l)
Sets the locale of this component. This is a bound property.

Parameters:
l - the locale to become this component's locale
Since:
JDK1.1
See Also:
getLocale() sample code for java.awt.Component.getLocale() definition code for java.awt.Component.getLocale()

getColorModel sample code for java.awt.Component.getColorModel() definition code for java.awt.Component.getColorModel()

public ColorModel sample code for java.awt.image.ColorModel definition code for java.awt.image.ColorModel  getColorModel()
Gets the instance of ColorModel used to display the component on the output device.

Returns:
the color model used by this component
Since:
JDK1.0
See Also:
ColorModel sample code for java.awt.image.ColorModel definition code for java.awt.image.ColorModel , ComponentPeer.getColorModel() sample code for java.awt.peer.ComponentPeer.getColorModel() definition code for java.awt.peer.ComponentPeer.getColorModel() , Toolkit.getColorModel() sample code for java.awt.Toolkit.getColorModel() definition code for java.awt.Toolkit.getColorModel()

getLocation sample code for java.awt.Component.getLocation() definition code for java.awt.Component.getLocation()

public Point sample code for java.awt.Point definition code for java.awt.Point  getLocation()
Gets the location of this component in the form of a point specifying the component's top-left corner. The location will be relative to the parent's coordinate space.

Due to the asynchronous nature of native event handling, this method can return outdated values (for instance, after several calls of setLocation() in rapid succession). For this reason, the recommended method of obtaining a component's position is within java.awt.event.ComponentListener.componentMoved(), which is called after the operating system has finished moving the component.

Returns:
an instance of Point representing the top-left corner of the component's bounds in the coordinate space of the component's parent
Since:
JDK1.1
See Also:
setLocation(int, int) sample code for java.awt.Component.setLocation(int, int) definition code for java.awt.Component.setLocation(int, int) , getLocationOnScreen() sample code for java.awt.Component.getLocationOnScreen() definition code for java.awt.Component.getLocationOnScreen()

getLocationOnScreen sample code for java.awt.Component.getLocationOnScreen() definition code for java.awt.Component.getLocationOnScreen()

public Point sample code for java.awt.Point definition code for java.awt.Point  getLocationOnScreen()
Gets the location of this component in the form of a point specifying the component's top-left corner in the screen's coordinate space.

Returns:
an instance of Point representing the top-left corner of the component's bounds in the coordinate space of the screen
Throws:
IllegalComponentStateException - if the component is not showing on the screen
See Also:
setLocation(int, int) sample code for java.awt.Component.setLocation(int, int) definition code for java.awt.Component.setLocation(int, int) , getLocation() sample code for java.awt.Component.getLocation() definition code for java.awt.Component.getLocation()

location sample code for java.awt.Component.location() definition code for java.awt.Component.location()

@Deprecated
public Point sample code for java.awt.Point definition code for java.awt.Point  location()
Deprecated. As of JDK version 1.1, replaced by getLocation().


setLocation sample code for java.awt.Component.setLocation(int, int) definition code for java.awt.Component.setLocation(int, int)

public void setLocation(int x,
                        int y)
Moves this component to a new location. The top-left corner of the new location is specified by the x and y parameters in the coordinate space of this component's parent.

Parameters:
x - the x-coordinate of the new location's top-left corner in the parent's coordinate space
y - the y-coordinate of the new location's top-left corner in the parent's coordinate space
Since:
JDK1.1
See Also:
getLocation() sample code for java.awt.Component.getLocation() definition code for java.awt.Component.getLocation() , setBounds(int, int, int, int) sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.setBounds(int, int, int, int)

move sample code for java.awt.Component.move(int, int) definition code for java.awt.Component.move(int, int)

@Deprecated
public void move(int x,
                            int y)
Deprecated. As of JDK version 1.1, replaced by setLocation(int, int).


setLocation sample code for java.awt.Component.setLocation(java.awt.Point) definition code for java.awt.Component.setLocation(java.awt.Point)

public void setLocation(Point sample code for java.awt.Point definition code for java.awt.Point  p)
Moves this component to a new location. The top-left corner of the new location is specified by point p. Point p is given in the parent's coordinate space.

Parameters:
p - the point defining the top-left corner of the new location, given in the coordinate space of this component's parent
Since:
JDK1.1
See Also:
getLocation() sample code for java.awt.Component.getLocation() definition code for java.awt.Component.getLocation() , setBounds(int, int, int, int) sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.setBounds(int, int, int, int)

getSize sample code for java.awt.Component.getSize() definition code for java.awt.Component.getSize()

public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  getSize()
Returns the size of this component in the form of a Dimension object. The height field of the Dimension object contains this component's height, and the width field of the Dimension object contains this component's width.

Returns:
a Dimension object that indicates the size of this component
Since:
JDK1.1
See Also:
setSize(int, int) sample code for java.awt.Component.setSize(int, int) definition code for java.awt.Component.setSize(int, int)

size sample code for java.awt.Component.size() definition code for java.awt.Component.size()

@Deprecated
public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  size()
Deprecated. As of JDK version 1.1, replaced by getSize().


setSize sample code for java.awt.Component.setSize(int, int) definition code for java.awt.Component.setSize(int, int)

public void setSize(int width,
                    int height)
Resizes this component so that it has width width and height height.

Parameters:
width - the new width of this component in pixels
height - the new height of this component in pixels
Since:
JDK1.1
See Also:
getSize() sample code for java.awt.Component.getSize() definition code for java.awt.Component.getSize() , setBounds(int, int, int, int) sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.setBounds(int, int, int, int)

resize sample code for java.awt.Component.resize(int, int) definition code for java.awt.Component.resize(int, int)

@Deprecated
public void resize(int width,
                              int height)
Deprecated. As of JDK version 1.1, replaced by setSize(int, int).


setSize sample code for java.awt.Component.setSize(java.awt.Dimension) definition code for java.awt.Component.setSize(java.awt.Dimension)

public void setSize(Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  d)
Resizes this component so that it has width d.width and height d.height.

Parameters:
d - the dimension specifying the new size of this component
Since:
JDK1.1
See Also:
setSize(int, int) sample code for java.awt.Component.setSize(int, int) definition code for java.awt.Component.setSize(int, int) , setBounds(int, int, int, int) sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.setBounds(int, int, int, int)

resize sample code for java.awt.Component.resize(java.awt.Dimension) definition code for java.awt.Component.resize(java.awt.Dimension)

@Deprecated
public void resize(Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  d)
Deprecated. As of JDK version 1.1, replaced by setSize(Dimension).


getBounds sample code for java.awt.Component.getBounds() definition code for java.awt.Component.getBounds()

public Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle  getBounds()
Gets the bounds of this component in the form of a Rectangle object. The bounds specify this component's width, height, and location relative to its parent.

Returns:
a rectangle indicating this component's bounds
See Also:
setBounds(int, int, int, int) sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.setBounds(int, int, int, int) , getLocation() sample code for java.awt.Component.getLocation() definition code for java.awt.Component.getLocation() , getSize() sample code for java.awt.Component.getSize() definition code for java.awt.Component.getSize()

bounds sample code for java.awt.Component.bounds() definition code for java.awt.Component.bounds()

@Deprecated
public Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle  bounds()
Deprecated. As of JDK version 1.1, replaced by getBounds().


setBounds sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.setBounds(int, int, int, int)

public void setBounds(int x,
                      int y,
                      int width,
                      int height)
Moves and resizes this component. The new location of the top-left corner is specified by x and y, and the new size is specified by width and height.

Parameters:
x - the new x-coordinate of this component
y - the new y-coordinate of this component
width - the new width of this component
height - the new height of this component
Since:
JDK1.1
See Also:
getBounds() sample code for java.awt.Component.getBounds() definition code for java.awt.Component.getBounds() , setLocation(int, int) sample code for java.awt.Component.setLocation(int, int) definition code for java.awt.Component.setLocation(int, int) , setLocation(Point) sample code for java.awt.Component.setLocation(java.awt.Point) definition code for java.awt.Component.setLocation(java.awt.Point) , setSize(int, int) sample code for java.awt.Component.setSize(int, int) definition code for java.awt.Component.setSize(int, int) , setSize(Dimension) sample code for java.awt.Component.setSize(java.awt.Dimension) definition code for java.awt.Component.setSize(java.awt.Dimension)

reshape sample code for java.awt.Component.reshape(int, int, int, int) definition code for java.awt.Component.reshape(int, int, int, int)

@Deprecated
public void reshape(int x,
                               int y,
                               int width,
                               int height)
Deprecated. As of JDK version 1.1, replaced by setBounds(int, int, int, int).


setBounds sample code for java.awt.Component.setBounds(java.awt.Rectangle) definition code for java.awt.Component.setBounds(java.awt.Rectangle)

public void setBounds(Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle  r)
Moves and resizes this component to conform to the new bounding rectangle r. This component's new position is specified by r.x and r.y, and its new size is specified by r.width and r.height

Parameters:
r - the new bounding rectangle for this component
Since:
JDK1.1
See Also:
getBounds() sample code for java.awt.Component.getBounds() definition code for java.awt.Component.getBounds() , setLocation(int, int) sample code for java.awt.Component.setLocation(int, int) definition code for java.awt.Component.setLocation(int, int) , setLocation(Point) sample code for java.awt.Component.setLocation(java.awt.Point) definition code for java.awt.Component.setLocation(java.awt.Point) , setSize(int, int) sample code for java.awt.Component.setSize(int, int) definition code for java.awt.Component.setSize(int, int) , setSize(Dimension) sample code for java.awt.Component.setSize(java.awt.Dimension) definition code for java.awt.Component.setSize(java.awt.Dimension)

getX sample code for java.awt.Component.getX() definition code for java.awt.Component.getX()

public int getX()
Returns the current x coordinate of the components origin. This method is preferable to writing component.getBounds().x, or component.getLocation().x because it doesn't cause any heap allocations.

Returns:
the current x coordinate of the components origin
Since:
1.2

getY sample code for java.awt.Component.getY() definition code for java.awt.Component.getY()

public int getY()
Returns the current y coordinate of the components origin. This method is preferable to writing component.getBounds().y, or component.getLocation().y because it doesn't cause any heap allocations.

Returns:
the current y coordinate of the components origin
Since:
1.2

getWidth sample code for java.awt.Component.getWidth() definition code for java.awt.Component.getWidth()

public int getWidth()
Returns the current width of this component. This method is preferable to writing component.getBounds().width, or component.getSize().width because it doesn't cause any heap allocations.

Returns:
the current width of this component
Since:
1.2

getHeight sample code for java.awt.Component.getHeight() definition code for java.awt.Component.getHeight()

public int getHeight()
Returns the current height of this component. This method is preferable to writing component.getBounds().heightcomponent.getSize().height because it doesn't cause any heap allocations.

Returns:
the current height of this component
Since:
1.2

getBounds sample code for java.awt.Component.getBounds(java.awt.Rectangle) definition code for java.awt.Component.getBounds(java.awt.Rectangle)

public Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle  getBounds(Rectangle sample code for java.awt.Rectangle definition code for java.awt.Rectangle  rv)
Stores the bounds of this component into "return value" rv and return rv. If rv is null a new Rectangle is allocated. This version of getBounds is useful if the caller wants to avoid allocating a new Rectangle object on the heap.

Parameters:
rv - the return value, modified to the components bounds
Returns:
rv

getSize sample code for java.awt.Component.getSize(java.awt.Dimension) definition code for java.awt.Component.getSize(java.awt.Dimension)

public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  getSize(Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  rv)
Stores the width/height of this component into "return value" rv and return rv. If rv is null a new Dimension object is allocated. This version of getSize is useful if the caller wants to avoid allocating a new Dimension object on the heap.

Parameters:
rv - the return value, modified to the components size
Returns:
rv

getLocation sample code for java.awt.Component.getLocation(java.awt.Point) definition code for java.awt.Component.getLocation(java.awt.Point)

public Point sample code for java.awt.Point definition code for java.awt.Point  getLocation(Point sample code for java.awt.Point definition code for java.awt.Point  rv)
Stores the x,y origin of this component into "return value" rv and return rv. If rv is null a new Point is allocated. This version of getLocation is useful if the caller wants to avoid allocating a new Point object on the heap.

Parameters:
rv - the return value, modified to the components location
Returns:
rv

isOpaque sample code for java.awt.Component.isOpaque() definition code for java.awt.Component.isOpaque()

public boolean isOpaque()
Returns true if this component is completely opaque, returns false by default.

An opaque component paints every pixel within its rectangular region. A non-opaque component paints only some of its pixels, allowing the pixels underneath it to "show through". A component that does not fully paint its pixels therefore provides a degree of transparency. Only lightweight components can be transparent.

Subclasses that guarantee to always completely paint their contents should override this method and return true. All of the "heavyweight" AWT components are opaque.

Returns:
true if this component is completely opaque
Since:
1.2
See Also:
isLightweight() sample code for java.awt.Component.isLightweight() definition code for java.awt.Component.isLightweight()

isLightweight sample code for java.awt.Component.isLightweight() definition code for java.awt.Component.isLightweight()

public boolean isLightweight()
A lightweight component doesn't have a native toolkit peer. Subclasses of Component and Container, other than the ones defined in this package like Button or Scrollbar, are lightweight. All of the Swing components are lightweights.

This method will always return false if this component is not displayable because it is impossible to determine the weight of an undisplayable component.

Returns:
true if this component has a lightweight peer; false if it has a native peer or no peer
Since:
1.2
See Also:
isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable()

setPreferredSize sample code for java.awt.Component.setPreferredSize(java.awt.Dimension) definition code for java.awt.Component.setPreferredSize(java.awt.Dimension)

public void setPreferredSize(Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  preferredSize)
Sets the preferred size of this component to a constant value. Subsequent calls to getPreferredSize will always return this value. Setting the preferred size to null restores the default behavior.

Parameters:
preferredSize - The new preferred size, or null
Since:
1.5
See Also:
getPreferredSize() sample code for java.awt.Component.getPreferredSize() definition code for java.awt.Component.getPreferredSize() , isPreferredSizeSet() sample code for java.awt.Component.isPreferredSizeSet() definition code for java.awt.Component.isPreferredSizeSet()

isPreferredSizeSet sample code for java.awt.Component.isPreferredSizeSet() definition code for java.awt.Component.isPreferredSizeSet()

public boolean isPreferredSizeSet()
Returns true if the preferred size has been set to a non-null value otherwise returns false.

Returns:
true if setPreferredSize has been invoked with a non-null value.
Since:
1.5

getPreferredSize sample code for java.awt.Component.getPreferredSize() definition code for java.awt.Component.getPreferredSize()

public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  getPreferredSize()
Gets the preferred size of this component.

Returns:
a dimension object indicating this component's preferred size
See Also:
getMinimumSize() sample code for java.awt.Component.getMinimumSize() definition code for java.awt.Component.getMinimumSize() , LayoutManager sample code for java.awt.LayoutManager definition code for java.awt.LayoutManager

preferredSize sample code for java.awt.Component.preferredSize() definition code for java.awt.Component.preferredSize()

@Deprecated
public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  preferredSize()
Deprecated. As of JDK version 1.1, replaced by getPreferredSize().


setMinimumSize sample code for java.awt.Component.setMinimumSize(java.awt.Dimension) definition code for java.awt.Component.setMinimumSize(java.awt.Dimension)

public void setMinimumSize(Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  minimumSize)
Sets the minimum size of this component to a constant value. Subsequent calls to getMinimumSize will always return this value. Setting the minimum size to null restores the default behavior.

Parameters:
minimumSize - the new minimum size of this component
Since:
1.5
See Also:
getMinimumSize() sample code for java.awt.Component.getMinimumSize() definition code for java.awt.Component.getMinimumSize() , isMinimumSizeSet() sample code for java.awt.Component.isMinimumSizeSet() definition code for java.awt.Component.isMinimumSizeSet()

isMinimumSizeSet sample code for java.awt.Component.isMinimumSizeSet() definition code for java.awt.Component.isMinimumSizeSet()

public boolean isMinimumSizeSet()
Returns whether or not setMinimumSize has been invoked with a non-null value.

Returns:
true if setMinimumSize has been invoked with a non-null value.
Since:
1.5

getMinimumSize sample code for java.awt.Component.getMinimumSize() definition code for java.awt.Component.getMinimumSize()

public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  getMinimumSize()
Gets the mininimum size of this component.

Returns:
a dimension object indicating this component's minimum size
See Also:
getPreferredSize() sample code for java.awt.Component.getPreferredSize() definition code for java.awt.Component.getPreferredSize() , LayoutManager sample code for java.awt.LayoutManager definition code for java.awt.LayoutManager

minimumSize sample code for java.awt.Component.minimumSize() definition code for java.awt.Component.minimumSize()

@Deprecated
public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  minimumSize()
Deprecated. As of JDK version 1.1, replaced by getMinimumSize().


setMaximumSize sample code for java.awt.Component.setMaximumSize(java.awt.Dimension) definition code for java.awt.Component.setMaximumSize(java.awt.Dimension)

public void setMaximumSize(Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  maximumSize)
Sets the maximum size of this component to a constant value. Subsequent calls to getMaximumSize will always return this value. Setting the maximum size to null restores the default behavior.

Parameters:
maximumSize - a Dimension containing the desired maximum allowable size
Since:
1.5
See Also:
getMaximumSize() sample code for java.awt.Component.getMaximumSize() definition code for java.awt.Component.getMaximumSize() , isMaximumSizeSet() sample code for java.awt.Component.isMaximumSizeSet() definition code for java.awt.Component.isMaximumSizeSet()

isMaximumSizeSet sample code for java.awt.Component.isMaximumSizeSet() definition code for java.awt.Component.isMaximumSizeSet()

public boolean isMaximumSizeSet()
Returns true if the maximum size has been set to a non-null value otherwise returns false.

Returns:
true if maximumSize is non-null, false otherwise
Since:
1.5

getMaximumSize sample code for java.awt.Component.getMaximumSize() definition code for java.awt.Component.getMaximumSize()

public Dimension sample code for java.awt.Dimension definition code for java.awt.Dimension  getMaximumSize()
Gets the maximum size of this component.

Returns:
a dimension object indicating this component's maximum size
See Also:
getMinimumSize() sample code for java.awt.Component.getMinimumSize() definition code for java.awt.Component.getMinimumSize() , getPreferredSize() sample code for java.awt.Component.getPreferredSize() definition code for java.awt.Component.getPreferredSize() , LayoutManager sample code for java.awt.LayoutManager definition code for java.awt.LayoutManager

getAlignmentX sample code for java.awt.Component.getAlignmentX() definition code for java.awt.Component.getAlignmentX()

public float getAlignmentX()
Returns the alignment along the x axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.


getAlignmentY sample code for java.awt.Component.getAlignmentY() definition code for java.awt.Component.getAlignmentY()

public float getAlignmentY()
Returns the alignment along the y axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.


doLayout sample code for java.awt.Component.doLayout() definition code for java.awt.Component.doLayout()

public void doLayout()
Prompts the layout manager to lay out this component. This is usually called when the component (more specifically, container) is validated.

See Also:
validate() sample code for java.awt.Component.validate() definition code for java.awt.Component.validate() , LayoutManager sample code for java.awt.LayoutManager definition code for java.awt.LayoutManager

layout sample code for java.awt.Component.layout() definition code for java.awt.Component.layout()

@Deprecated
public void layout()
Deprecated. As of JDK version 1.1, replaced by doLayout().


validate sample code for java.awt.Component.validate() definition code for java.awt.Component.validate()

public void validate()
Ensures that this component has a valid layout. This method is primarily intended to operate on instances of Container.

Since:
JDK1.0
See Also:
invalidate() sample code for java.awt.Component.invalidate() definition code for java.awt.Component.invalidate() , doLayout() sample code for java.awt.Component.doLayout() definition code for java.awt.Component.doLayout() , LayoutManager sample code for java.awt.LayoutManager definition code for java.awt.LayoutManager , Container.validate() sample code for java.awt.Container.validate() definition code for java.awt.Container.validate()

invalidate sample code for java.awt.Component.invalidate() definition code for java.awt.Component.invalidate()

public void invalidate()
Invalidates this component. This component and all parents above it are marked as needing to be laid out. This method can be called often, so it needs to execute quickly.

Since:
JDK1.0
See Also:
validate() sample code for java.awt.Component.validate() definition code for java.awt.Component.validate() , doLayout() sample code for java.awt.Component.doLayout() definition code for java.awt.Component.doLayout() , LayoutManager sample code for java.awt.LayoutManager definition code for java.awt.LayoutManager

getGraphics sample code for java.awt.Component.getGraphics() definition code for java.awt.Component.getGraphics()

public Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  getGraphics()
Creates a graphics context for this component. This method will return null if this component is currently not displayable.

Returns:
a graphics context for this component, or null if it has none
Since:
JDK1.0
See Also:
paint(java.awt.Graphics) sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics)

getFontMetrics sample code for java.awt.Component.getFontMetrics(java.awt.Font) definition code for java.awt.Component.getFontMetrics(java.awt.Font)

public FontMetrics sample code for java.awt.FontMetrics definition code for java.awt.FontMetrics  getFontMetrics(Font sample code for java.awt.Font definition code for java.awt.Font  font)
Gets the font metrics for the specified font.

Parameters:
font - the font for which font metrics is to be obtained
Returns:
the font metrics for font
Since:
JDK1.0
See Also:
getFont() sample code for java.awt.Component.getFont() definition code for java.awt.Component.getFont() , getPeer() sample code for java.awt.Component.getPeer() definition code for java.awt.Component.getPeer() , ComponentPeer.getFontMetrics(Font) sample code for java.awt.peer.ComponentPeer.getFontMetrics(java.awt.Font) definition code for java.awt.peer.ComponentPeer.getFontMetrics(java.awt.Font) , Toolkit.getFontMetrics(Font) sample code for java.awt.Toolkit.getFontMetrics(java.awt.Font) definition code for java.awt.Toolkit.getFontMetrics(java.awt.Font)

setCursor sample code for java.awt.Component.setCursor(java.awt.Cursor) definition code for java.awt.Component.setCursor(java.awt.Cursor)

public void setCursor(Cursor sample code for java.awt.Cursor definition code for java.awt.Cursor  cursor)
Sets the cursor image to the specified cursor. This cursor image is displayed when the contains method for this component returns true for the current cursor location, and this Component is visible, displayable, and enabled. Setting the cursor of a Container causes that cursor to be displayed within all of the container's subcomponents, except for those that have a non-null cursor.

Parameters:
cursor - One of the constants defined by the Cursor class; if this parameter is null then this component will inherit the cursor of its parent
Since:
JDK1.1
See Also:
isEnabled() sample code for java.awt.Component.isEnabled() definition code for java.awt.Component.isEnabled() , isShowing() sample code for java.awt.Component.isShowing() definition code for java.awt.Component.isShowing() , getCursor() sample code for java.awt.Component.getCursor() definition code for java.awt.Component.getCursor() , contains(int, int) sample code for java.awt.Component.contains(int, int) definition code for java.awt.Component.contains(int, int) , Toolkit.createCustomCursor(java.awt.Image, java.awt.Point, java.lang.String) sample code for java.awt.Toolkit.createCustomCursor(java.awt.Image, java.awt.Point, java.lang.String) definition code for java.awt.Toolkit.createCustomCursor(java.awt.Image, java.awt.Point, java.lang.String) , Cursor sample code for java.awt.Cursor definition code for java.awt.Cursor

getCursor sample code for java.awt.Component.getCursor() definition code for java.awt.Component.getCursor()

public Cursor sample code for java.awt.Cursor definition code for java.awt.Cursor  getCursor()
Gets the cursor set in the component. If the component does not have a cursor set, the cursor of its parent is returned. If no cursor is set in the entire hierarchy, Cursor.DEFAULT_CURSOR is returned.

Since:
JDK1.1
See Also:
setCursor(java.awt.Cursor) sample code for java.awt.Component.setCursor(java.awt.Cursor) definition code for java.awt.Component.setCursor(java.awt.Cursor)

isCursorSet sample code for java.awt.Component.isCursorSet() definition code for java.awt.Component.isCursorSet()

public boolean isCursorSet()
Returns whether the cursor has been explicitly set for this Component. If this method returns false, this Component is inheriting its cursor from an ancestor.

Returns:
true if the cursor has been explicitly set for this Component; false otherwise.
Since:
1.4

paint sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics)

public void paint(Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
Paints this component.

This method is called when the contents of the component should be painted; such as when the component is first being shown or is damaged and in need of repair. The clip rectangle in the Graphics parameter is set to the area which needs to be painted. Subclasses of Component that override this method need not call super.paint(g).

For performance reasons, Components with zero width or height aren't considered to need painting when they are first shown, and also aren't considered to need repair.

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

Parameters:
g - the graphics context to use for painting
Since:
JDK1.0
See Also:
update(java.awt.Graphics) sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics)

update sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics)

public void update(Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
Updates this component.

If this component is not a lightweight component, the AWT calls the update method in response to a call to repaint. You can assume that the background is not cleared.

The update method of Component calls this component's paint method to redraw this component. This method is commonly overridden by subclasses which need to do additional work in response to a call to repaint. Subclasses of Component that override this method should either call super.update(g), or call paint(g) directly from their update method.

The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

Parameters:
g - the specified context to use for updating
Since:
JDK1.0
See Also:
paint(java.awt.Graphics) sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics) , repaint() sample code for java.awt.Component.repaint() definition code for java.awt.Component.repaint()

paintAll sample code for java.awt.Component.paintAll(java.awt.Graphics) definition code for java.awt.Component.paintAll(java.awt.Graphics)

public void paintAll(Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
Paints this component and all of its subcomponents.

The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

Parameters:
g - the graphics context to use for painting
Since:
JDK1.0
See Also:
paint(java.awt.Graphics) sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics)

repaint sample code for java.awt.Component.repaint() definition code for java.awt.Component.repaint()

public void repaint()
Repaints this component.

If this component is a lightweight component, this method causes a call to this component's paint method as soon as possible. Otherwise, this method causes a call to this component's update method as soon as possible.

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

Since:
JDK1.0
See Also:
update(Graphics) sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics)

repaint sample code for java.awt.Component.repaint(long) definition code for java.awt.Component.repaint(long)

public void repaint(long tm)
Repaints the component. If this component is a lightweight component, this results in a call to paint within tm milliseconds.

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

Parameters:
tm - maximum time in milliseconds before update
Since:
JDK1.0
See Also:
paint(java.awt.Graphics) sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics) , update(Graphics) sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics)

repaint sample code for java.awt.Component.repaint(int, int, int, int) definition code for java.awt.Component.repaint(int, int, int, int)

public void repaint(int x,
                    int y,
                    int width,
                    int height)
Repaints the specified rectangle of this component.

If this component is a lightweight component, this method causes a call to this component's paint method as soon as possible. Otherwise, this method causes a call to this component's update method as soon as possible.

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

Parameters:
x - the x coordinate
y - the y coordinate
width - the width
height - the height
Since:
JDK1.0
See Also:
update(Graphics) sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics)

repaint sample code for java.awt.Component.repaint(long, int, int, int, int) definition code for java.awt.Component.repaint(long, int, int, int, int)

public void repaint(long tm,
                    int x,
                    int y,
                    int width,
                    int height)
Repaints the specified rectangle of this component within tm milliseconds.

If this component is a lightweight component, this method causes a call to this component's paint method. Otherwise, this method causes a call to this component's update method.

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

Parameters:
tm - maximum time in milliseconds before update
x - the x coordinate
y - the y coordinate
width - the width
height - the height
Since:
JDK1.0
See Also:
update(Graphics) sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics)

print sample code for java.awt.Component.print(java.awt.Graphics) definition code for java.awt.Component.print(java.awt.Graphics)

public void print(Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
Prints this component. Applications should override this method for components that must do special processing before being printed or should be printed differently than they are painted.

The default implementation of this method calls the paint method.

The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

Parameters:
g - the graphics context to use for printing
Since:
JDK1.0
See Also:
paint(Graphics) sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics)

printAll sample code for java.awt.Component.printAll(java.awt.Graphics) definition code for java.awt.Component.printAll(java.awt.Graphics)

public void printAll(Graphics sample code for java.awt.Graphics definition code for java.awt.Graphics  g)
Prints this component and all of its subcomponents.

The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

Parameters:
g - the graphics context to use for printing
Since:
JDK1.0
See Also:
print(Graphics) sample code for java.awt.Component.print(java.awt.Graphics) definition code for java.awt.Component.print(java.awt.Graphics)

imageUpdate sample code for java.awt.Component.imageUpdate(java.awt.Image, int, int, int, int, int) definition code for java.awt.Component.imageUpdate(java.awt.Image, int, int, int, int, int)

public boolean imageUpdate(Image sample code for java.awt.Image definition code for java.awt.Image  img,
                           int infoflags,
                           int x,
                           int y,
                           int w,
                           int h)
Repaints the component when the image has changed. This imageUpdate method of an ImageObserver is called when more information about an image which had been previously requested using an asynchronous routine such as the drawImage method of Graphics becomes available. See the definition of imageUpdate for more information on this method and its arguments.

The imageUpdate method of Component incrementally draws an image on the component as more of the bits of the image are available.

If the system property awt.image.incrementaldraw is missing or has the value true, the image is incrementally drawn. If the system property has any other value, then the image is not drawn until it has been completely loaded.

Also, if incremental drawing is in effect, the value of the system property awt.image.redrawrate is interpreted as an integer to give the maximum redraw rate, in milliseconds. If the system property is missing or cannot be interpreted as an integer, the redraw rate is once every 100ms.

The interpretation of the x, y, width, and height arguments depends on the value of the infoflags argument.

Specified by:
imageUpdate sample code for java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int) definition code for java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int) in interface ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver
Parameters:
img - the image being observed
infoflags - see imageUpdate for more information
x - the x coordinate
y - the y coordinate
w - the width
h - the height
Returns:
false if the infoflags indicate that the image is completely loaded; true otherwise.
Since:
JDK1.0
See Also:
ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver , Graphics.drawImage(Image, int, int, Color, java.awt.image.ImageObserver) sample code for java.awt.Graphics.drawImage(java.awt.Image, int, int, java.awt.Color, java.awt.image.ImageObserver) definition code for java.awt.Graphics.drawImage(java.awt.Image, int, int, java.awt.Color, java.awt.image.ImageObserver) , Graphics.drawImage(Image, int, int, java.awt.image.ImageObserver) sample code for java.awt.Graphics.drawImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Graphics.drawImage(java.awt.Image, int, int, java.awt.image.ImageObserver) , Graphics.drawImage(Image, int, int, int, int, Color, java.awt.image.ImageObserver) sample code for java.awt.Graphics.drawImage(java.awt.Image, int, int, int, int, java.awt.Color, java.awt.image.ImageObserver) definition code for java.awt.Graphics.drawImage(java.awt.Image, int, int, int, int, java.awt.Color, java.awt.image.ImageObserver) , Graphics.drawImage(Image, int, int, int, int, java.awt.image.ImageObserver) sample code for java.awt.Graphics.drawImage(java.awt.Image, int, int, int, int, java.awt.image.ImageObserver) definition code for java.awt.Graphics.drawImage(java.awt.Image, int, int, int, int, java.awt.image.ImageObserver) , ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int) sample code for java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int) definition code for java.awt.image.ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

createImage sample code for java.awt.Component.createImage(java.awt.image.ImageProducer) definition code for java.awt.Component.createImage(java.awt.image.ImageProducer)

public Image sample code for java.awt.Image definition code for java.awt.Image  createImage(ImageProducer sample code for java.awt.image.ImageProducer definition code for java.awt.image.ImageProducer  producer)
Creates an image from the specified image producer.

Parameters:
producer - the image producer
Returns:
the image produced
Since:
JDK1.0

createImage sample code for java.awt.Component.createImage(int, int) definition code for java.awt.Component.createImage(int, int)

public Image sample code for java.awt.Image definition code for java.awt.Image  createImage(int width,
                         int height)
Creates an off-screen drawable image to be used for double buffering.

Parameters:
width - the specified width
height - the specified height
Returns:
an off-screen drawable image, which can be used for double buffering. The return value may be null if the component is not displayable. This will always happen if GraphicsEnvironment.isHeadless() returns true.
Since:
JDK1.0
See Also:
isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , GraphicsEnvironment.isHeadless() sample code for java.awt.GraphicsEnvironment.isHeadless() definition code for java.awt.GraphicsEnvironment.isHeadless()

createVolatileImage sample code for java.awt.Component.createVolatileImage(int, int) definition code for java.awt.Component.createVolatileImage(int, int)

public VolatileImage sample code for java.awt.image.VolatileImage definition code for java.awt.image.VolatileImage  createVolatileImage(int width,
                                         int height)
Creates a volatile off-screen drawable image to be used for double buffering.

Parameters:
width - the specified width.
height - the specified height.
Returns:
an off-screen drawable image, which can be used for double buffering. The return value may be null if the component is not displayable. This will always happen if GraphicsEnvironment.isHeadless() returns true.
Since:
1.4
See Also:
VolatileImage sample code for java.awt.image.VolatileImage definition code for java.awt.image.VolatileImage , isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , GraphicsEnvironment.isHeadless() sample code for java.awt.GraphicsEnvironment.isHeadless() definition code for java.awt.GraphicsEnvironment.isHeadless()

createVolatileImage sample code for java.awt.Component.createVolatileImage(int, int, java.awt.ImageCapabilities) definition code for java.awt.Component.createVolatileImage(int, int, java.awt.ImageCapabilities)

public VolatileImage sample code for java.awt.image.VolatileImage definition code for java.awt.image.VolatileImage  createVolatileImage(int width,
                                         int height,
                                         ImageCapabilities sample code for java.awt.ImageCapabilities definition code for java.awt.ImageCapabilities  caps)
                                  throws AWTException sample code for java.awt.AWTException definition code for java.awt.AWTException 
Creates a volatile off-screen drawable image, with the given capabilities. The contents of this image may be lost at any time due to operating system issues, so the image must be managed via the VolatileImage interface.

Parameters:
width - the specified width.
height - the specified height.
caps - the image capabilities
Returns:
a VolatileImage object, which can be used to manage surface contents loss and capabilities.
Throws:
AWTException sample code for java.awt.AWTException definition code for java.awt.AWTException - if an image with the specified capabilities cannot be created
Since:
1.4
See Also:
VolatileImage sample code for java.awt.image.VolatileImage definition code for java.awt.image.VolatileImage

prepareImage sample code for java.awt.Component.prepareImage(java.awt.Image, java.awt.image.ImageObserver) definition code for java.awt.Component.prepareImage(java.awt.Image, java.awt.image.ImageObserver)

public boolean prepareImage(Image sample code for java.awt.Image definition code for java.awt.Image  image,
                            ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
Prepares an image for rendering on this component. The image data is downloaded asynchronously in another thread and the appropriate screen representation of the image is generated.

Parameters:
image - the Image for which to prepare a screen representation
observer - the ImageObserver object to be notified as the image is being prepared
Returns:
true if the image has already been fully prepared; false otherwise
Since:
JDK1.0

prepareImage sample code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver)

public boolean prepareImage(Image sample code for java.awt.Image definition code for java.awt.Image  image,
                            int width,
                            int height,
                            ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
Prepares an image for rendering on this component at the specified width and height.

The image data is downloaded asynchronously in another thread, and an appropriately scaled screen representation of the image is generated.

Parameters:
image - the instance of Image for which to prepare a screen representation
width - the width of the desired screen representation
height - the height of the desired screen representation
observer - the ImageObserver object to be notified as the image is being prepared
Returns:
true if the image has already been fully prepared; false otherwise
Since:
JDK1.0
See Also:
ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver

checkImage sample code for java.awt.Component.checkImage(java.awt.Image, java.awt.image.ImageObserver) definition code for java.awt.Component.checkImage(java.awt.Image, java.awt.image.ImageObserver)

public int checkImage(Image sample code for java.awt.Image definition code for java.awt.Image  image,
                      ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
Returns the status of the construction of a screen representation of the specified image.

This method does not cause the image to begin loading. An application must use the prepareImage method to force the loading of an image.

Information on the flags returned by this method can be found with the discussion of the ImageObserver interface.

Parameters:
image - the Image object whose status is being checked
observer - the ImageObserver object to be notified as the image is being prepared
Returns:
the bitwise inclusive OR of ImageObserver flags indicating what information about the image is currently available
Since:
JDK1.0
See Also:
prepareImage(Image, int, int, java.awt.image.ImageObserver) sample code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver) , Toolkit.checkImage(Image, int, int, java.awt.image.ImageObserver) sample code for java.awt.Toolkit.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Toolkit.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver) , ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver

checkImage sample code for java.awt.Component.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Component.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver)

public int checkImage(Image sample code for java.awt.Image definition code for java.awt.Image  image,
                      int width,
                      int height,
                      ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver  observer)
Returns the status of the construction of a screen representation of the specified image.

This method does not cause the image to begin loading. An application must use the prepareImage method to force the loading of an image.

The checkImage method of Component calls its peer's checkImage method to calculate the flags. If this component does not yet have a peer, the component's toolkit's checkImage method is called instead.

Information on the flags returned by this method can be found with the discussion of the ImageObserver interface.

Parameters:
image - the Image object whose status is being checked
width - the width of the scaled version whose status is to be checked
height - the height of the scaled version whose status is to be checked
observer - the ImageObserver object to be notified as the image is being prepared
Returns:
the bitwise inclusive OR of ImageObserver flags indicating what information about the image is currently available
Since:
JDK1.0
See Also:
prepareImage(Image, int, int, java.awt.image.ImageObserver) sample code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Component.prepareImage(java.awt.Image, int, int, java.awt.image.ImageObserver) , Toolkit.checkImage(Image, int, int, java.awt.image.ImageObserver) sample code for java.awt.Toolkit.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver) definition code for java.awt.Toolkit.checkImage(java.awt.Image, int, int, java.awt.image.ImageObserver) , ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver

setIgnoreRepaint sample code for java.awt.Component.setIgnoreRepaint(boolean) definition code for java.awt.Component.setIgnoreRepaint(boolean)

public void setIgnoreRepaint(boolean ignoreRepaint)
Sets whether or not paint messages received from the operating system should be ignored. This does not affect paint events generated in software by the AWT, unless they are an immediate response to an OS-level paint message.

This is useful, for example, if running under full-screen mode and better performance is desired, or if page-flipping is used as the buffer strategy.

Since:
1.4
See Also:
getIgnoreRepaint() sample code for java.awt.Component.getIgnoreRepaint() definition code for java.awt.Component.getIgnoreRepaint() , Canvas.createBufferStrategy(int) sample code for java.awt.Canvas.createBufferStrategy(int) definition code for java.awt.Canvas.createBufferStrategy(int) , Window.createBufferStrategy(int) sample code for java.awt.Window.createBufferStrategy(int) definition code for java.awt.Window.createBufferStrategy(int) , BufferStrategy sample code for java.awt.image.BufferStrategy definition code for java.awt.image.BufferStrategy , GraphicsDevice.setFullScreenWindow(java.awt.Window) sample code for java.awt.GraphicsDevice.setFullScreenWindow(java.awt.Window) definition code for java.awt.GraphicsDevice.setFullScreenWindow(java.awt.Window)

getIgnoreRepaint sample code for java.awt.Component.getIgnoreRepaint() definition code for java.awt.Component.getIgnoreRepaint()

public boolean getIgnoreRepaint()
Returns:
whether or not paint messages received from the operating system should be ignored.
Since:
1.4
See Also:
setIgnoreRepaint(boolean) sample code for java.awt.Component.setIgnoreRepaint(boolean) definition code for java.awt.Component.setIgnoreRepaint(boolean)

contains sample code for java.awt.Component.contains(int, int) definition code for java.awt.Component.contains(int, int)

public boolean contains(int x,
                        int y)
Checks whether this component "contains" the specified point, where x and y are defined to be relative to the coordinate system of this component.

Parameters:
x - the x coordinate of the point
y - the y coordinate of the point
Since:
JDK1.1
See Also:
getComponentAt(int, int) sample code for java.awt.Component.getComponentAt(int, int) definition code for java.awt.Component.getComponentAt(int, int)

inside sample code for java.awt.Component.inside(int, int) definition code for java.awt.Component.inside(int, int)

@Deprecated
public boolean inside(int x,
                                 int y)
Deprecated. As of JDK version 1.1, replaced by contains(int, int).


contains sample code for java.awt.Component.contains(java.awt.Point) definition code for java.awt.Component.contains(java.awt.Point)

public boolean contains(Point sample code for java.awt.Point definition code for java.awt.Point  p)
Checks whether this component "contains" the specified point, where the point's x and y coordinates are defined to be relative to the coordinate system of this component.

Parameters:
p - the point
Since:
JDK1.1
See Also:
getComponentAt(Point) sample code for java.awt.Component.getComponentAt(java.awt.Point) definition code for java.awt.Component.getComponentAt(java.awt.Point)

getComponentAt sample code for java.awt.Component.getComponentAt(int, int) definition code for java.awt.Component.getComponentAt(int, int)

public Component sample code for java.awt.Component definition code for java.awt.Component  getComponentAt(int x,
                                int y)
Determines if this component or one of its immediate subcomponents contains the (xy) location, and if so, returns the containing component. This method only looks one level deep. If the point (xy) is inside a subcomponent that itself has subcomponents, it does not go looking down the subcomponent tree.

The locate method of Component simply returns the component itself if the (xy) coordinate location is inside its bounding box, and null otherwise.

Parameters:
x - the x coordinate
y - the y coordinate
Returns:
the component or subcomponent that contains the (xy) location; null if the location is outside this component
Since:
JDK1.0
See Also:
contains(int, int) sample code for java.awt.Component.contains(int, int) definition code for java.awt.Component.contains(int, int)

locate sample code for java.awt.Component.locate(int, int) definition code for java.awt.Component.locate(int, int)

@Deprecated
public Component sample code for java.awt.Component definition code for java.awt.Component  locate(int x,
                                   int y)
Deprecated. As of JDK version 1.1, replaced by getComponentAt(int, int).


getComponentAt sample code for java.awt.Component.getComponentAt(java.awt.Point) definition code for java.awt.Component.getComponentAt(java.awt.Point)

public Component sample code for java.awt.Component definition code for java.awt.Component  getComponentAt(Point sample code for java.awt.Point definition code for java.awt.Point  p)
Returns the component or subcomponent that contains the specified point.

Parameters:
p - the point
Since:
JDK1.1
See Also:
contains(int, int) sample code for java.awt.Component.contains(int, int) definition code for java.awt.Component.contains(int, int)

deliverEvent sample code for java.awt.Component.deliverEvent(java.awt.Event) definition code for java.awt.Component.deliverEvent(java.awt.Event)

@Deprecated
public void deliverEvent(Event sample code for java.awt.Event definition code for java.awt.Event  e)
Deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent e).


dispatchEvent sample code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) definition code for java.awt.Component.dispatchEvent(java.awt.AWTEvent)

public final void dispatchEvent(AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  e)
Dispatches an event to this component or one of its sub components. Calls processEvent before returning for 1.1-style events which have been enabled for the Component.

Parameters:
e - the event

postEvent sample code for java.awt.Component.postEvent(java.awt.Event) definition code for java.awt.Component.postEvent(java.awt.Event)

@Deprecated
public boolean postEvent(Event sample code for java.awt.Event definition code for java.awt.Event  e)
Deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent).

Specified by:
postEvent sample code for java.awt.MenuContainer.postEvent(java.awt.Event) definition code for java.awt.MenuContainer.postEvent(java.awt.Event) in interface MenuContainer sample code for java.awt.MenuContainer definition code for java.awt.MenuContainer

addComponentListener sample code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener)

public void addComponentListener(ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener  l)
Adds the specified component listener to receive component events from this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the component listener
Since:
JDK1.1
See Also:
ComponentEvent sample code for java.awt.event.ComponentEvent definition code for java.awt.event.ComponentEvent , ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener , removeComponentListener(java.awt.event.ComponentListener) sample code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) , getComponentListeners() sample code for java.awt.Component.getComponentListeners() definition code for java.awt.Component.getComponentListeners()

removeComponentListener sample code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener)

public void removeComponentListener(ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener  l)
Removes the specified component listener so that it no longer receives component events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the component listener
Since:
JDK1.1
See Also:
ComponentEvent sample code for java.awt.event.ComponentEvent definition code for java.awt.event.ComponentEvent , ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener , addComponentListener(java.awt.event.ComponentListener) sample code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) , getComponentListeners() sample code for java.awt.Component.getComponentListeners() definition code for java.awt.Component.getComponentListeners()

getComponentListeners sample code for java.awt.Component.getComponentListeners() definition code for java.awt.Component.getComponentListeners()

public ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener [] getComponentListeners()
Returns an array of all the component listeners registered on this component.

Returns:
all of this comonent's ComponentListeners or an empty array if no component listeners are currently registered
Since:
1.4
See Also:
addComponentListener(java.awt.event.ComponentListener) sample code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) , removeComponentListener(java.awt.event.ComponentListener) sample code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener)

addFocusListener sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener)

public void addFocusListener(FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener  l)
Adds the specified focus listener to receive focus events from this component when this component gains input focus. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the focus listener
Since:
JDK1.1
See Also:
FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent , FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener , removeFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) , getFocusListeners() sample code for java.awt.Component.getFocusListeners() definition code for java.awt.Component.getFocusListeners()

removeFocusListener sample code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener)

public void removeFocusListener(FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener  l)
Removes the specified focus listener so that it no longer receives focus events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the focus listener
Since:
JDK1.1
See Also:
FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent , FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener , addFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) , getFocusListeners() sample code for java.awt.Component.getFocusListeners() definition code for java.awt.Component.getFocusListeners()

getFocusListeners sample code for java.awt.Component.getFocusListeners() definition code for java.awt.Component.getFocusListeners()

public FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener [] getFocusListeners()
Returns an array of all the focus listeners registered on this component.

Returns:
all of this component's FocusListeners or an empty array if no component listeners are currently registered
Since:
1.4
See Also:
addFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) , removeFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener)

addHierarchyListener sample code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener)

public void addHierarchyListener(HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener  l)
Adds the specified hierarchy listener to receive hierarchy changed events from this component when the hierarchy to which this container belongs changes. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the hierarchy listener
Since:
1.3
See Also:
HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent , HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener , removeHierarchyListener(java.awt.event.HierarchyListener) sample code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) , getHierarchyListeners() sample code for java.awt.Component.getHierarchyListeners() definition code for java.awt.Component.getHierarchyListeners()

removeHierarchyListener sample code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener)

public void removeHierarchyListener(HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener  l)
Removes the specified hierarchy listener so that it no longer receives hierarchy changed events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the hierarchy listener
Since:
1.3
See Also:
HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent , HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener , addHierarchyListener(java.awt.event.HierarchyListener) sample code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) , getHierarchyListeners() sample code for java.awt.Component.getHierarchyListeners() definition code for java.awt.Component.getHierarchyListeners()

getHierarchyListeners sample code for java.awt.Component.getHierarchyListeners() definition code for java.awt.Component.getHierarchyListeners()

public HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener [] getHierarchyListeners()
Returns an array of all the hierarchy listeners registered on this component.

Returns:
all of this component's HierarchyListeners or an empty array if no hierarchy listeners are currently registered
Since:
1.4
See Also:
addHierarchyListener(java.awt.event.HierarchyListener) sample code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) , removeHierarchyListener(java.awt.event.HierarchyListener) sample code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener)

addHierarchyBoundsListener sample code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener)

public void addHierarchyBoundsListener(HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener  l)
Adds the specified hierarchy bounds listener to receive hierarchy bounds events from this component when the hierarchy to which this container belongs changes. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the hierarchy bounds listener
Since:
1.3
See Also:
HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent , HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener , removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) sample code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) , getHierarchyBoundsListeners() sample code for java.awt.Component.getHierarchyBoundsListeners() definition code for java.awt.Component.getHierarchyBoundsListeners()

removeHierarchyBoundsListener sample code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener)

public void removeHierarchyBoundsListener(HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener  l)
Removes the specified hierarchy bounds listener so that it no longer receives hierarchy bounds events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the hierarchy bounds listener
Since:
1.3
See Also:
HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent , HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener , addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) sample code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) , getHierarchyBoundsListeners() sample code for java.awt.Component.getHierarchyBoundsListeners() definition code for java.awt.Component.getHierarchyBoundsListeners()

getHierarchyBoundsListeners sample code for java.awt.Component.getHierarchyBoundsListeners() definition code for java.awt.Component.getHierarchyBoundsListeners()

public HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener [] getHierarchyBoundsListeners()
Returns an array of all the hierarchy bounds listeners registered on this component.

Returns:
all of this component's HierarchyBoundsListeners or an empty array if no hierarchy bounds listeners are currently registered
Since:
1.4
See Also:
addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) sample code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) , removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) sample code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener)

addKeyListener sample code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.addKeyListener(java.awt.event.KeyListener)

public void addKeyListener(KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener  l)
Adds the specified key listener to receive key events from this component. If l is null, no exception is thrown and no action is performed.

Parameters:
l - the key listener.
Since:
JDK1.1
See Also:
KeyEvent sample code for java.awt.event.KeyEvent definition code for java.awt.event.KeyEvent , KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener , removeKeyListener(java.awt.event.KeyListener) sample code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) , getKeyListeners() sample code for java.awt.Component.getKeyListeners() definition code for java.awt.Component.getKeyListeners()

removeKeyListener sample code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener)

public void removeKeyListener(KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener  l)
Removes the specified key listener so that it no longer receives key events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the key listener
Since:
JDK1.1
See Also:
KeyEvent sample code for java.awt.event.KeyEvent definition code for java.awt.event.KeyEvent , KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener , addKeyListener(java.awt.event.KeyListener) sample code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) , getKeyListeners() sample code for java.awt.Component.getKeyListeners() definition code for java.awt.Component.getKeyListeners()

getKeyListeners sample code for java.awt.Component.getKeyListeners() definition code for java.awt.Component.getKeyListeners()

public KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener [] getKeyListeners()
Returns an array of all the key listeners registered on this component.

Returns:
all of this component's KeyListeners or an empty array if no key listeners are currently registered
Since:
1.4
See Also:
addKeyListener(java.awt.event.KeyListener) sample code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) , removeKeyListener(java.awt.event.KeyListener) sample code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener)

addMouseListener sample code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.addMouseListener(java.awt.event.MouseListener)

public void addMouseListener(MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener  l)
Adds the specified mouse listener to receive mouse events from this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the mouse listener
Since:
JDK1.1
See Also:
MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent , MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener , removeMouseListener(java.awt.event.MouseListener) sample code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) , getMouseListeners() sample code for java.awt.Component.getMouseListeners() definition code for java.awt.Component.getMouseListeners()

removeMouseListener sample code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener)

public void removeMouseListener(MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener  l)
Removes the specified mouse listener so that it no longer receives mouse events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the mouse listener
Since:
JDK1.1
See Also:
MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent , MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener , addMouseListener(java.awt.event.MouseListener) sample code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) , getMouseListeners() sample code for java.awt.Component.getMouseListeners() definition code for java.awt.Component.getMouseListeners()

getMouseListeners sample code for java.awt.Component.getMouseListeners() definition code for java.awt.Component.getMouseListeners()

public MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener [] getMouseListeners()
Returns an array of all the mouse listeners registered on this component.

Returns:
all of this component's MouseListeners or an empty array if no mouse listeners are currently registered
Since:
1.4
See Also:
addMouseListener(java.awt.event.MouseListener) sample code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) , removeMouseListener(java.awt.event.MouseListener) sample code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener)

addMouseMotionListener sample code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener)

public void addMouseMotionListener(MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener  l)
Adds the specified mouse motion listener to receive mouse motion events from this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the mouse motion listener
Since:
JDK1.1
See Also:
MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent , MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener , removeMouseMotionListener(java.awt.event.MouseMotionListener) sample code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) , getMouseMotionListeners() sample code for java.awt.Component.getMouseMotionListeners() definition code for java.awt.Component.getMouseMotionListeners()

removeMouseMotionListener sample code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener)

public void removeMouseMotionListener(MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener  l)
Removes the specified mouse motion listener so that it no longer receives mouse motion events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the mouse motion listener
Since:
JDK1.1
See Also:
MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent , MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener , addMouseMotionListener(java.awt.event.MouseMotionListener) sample code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) , getMouseMotionListeners() sample code for java.awt.Component.getMouseMotionListeners() definition code for java.awt.Component.getMouseMotionListeners()

getMouseMotionListeners sample code for java.awt.Component.getMouseMotionListeners() definition code for java.awt.Component.getMouseMotionListeners()

public MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener [] getMouseMotionListeners()
Returns an array of all the mouse motion listeners registered on this component.

Returns:
all of this component's MouseMotionListeners or an empty array if no mouse motion listeners are currently registered
Since:
1.4
See Also:
addMouseMotionListener(java.awt.event.MouseMotionListener) sample code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) , removeMouseMotionListener(java.awt.event.MouseMotionListener) sample code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener)

addMouseWheelListener sample code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener)

public void addMouseWheelListener(MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener  l)
Adds the specified mouse wheel listener to receive mouse wheel events from this component. Containers also receive mouse wheel events from sub-components.

For information on how mouse wheel events are dispatched, see the class description for MouseWheelEvent sample code for java.awt.event.MouseWheelEvent definition code for java.awt.event.MouseWheelEvent .

If l is null, no exception is thrown and no action is performed.

Parameters:
l - the mouse wheel listener
Since:
1.4
See Also:
MouseWheelEvent sample code for java.awt.event.MouseWheelEvent definition code for java.awt.event.MouseWheelEvent , MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener , removeMouseWheelListener(java.awt.event.MouseWheelListener) sample code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) , getMouseWheelListeners() sample code for java.awt.Component.getMouseWheelListeners() definition code for java.awt.Component.getMouseWheelListeners()

removeMouseWheelListener sample code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener)

public void removeMouseWheelListener(MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener  l)
Removes the specified mouse wheel listener so that it no longer receives mouse wheel events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If l is null, no exception is thrown and no action is performed.

Parameters:
l - the mouse wheel listener.
Since:
1.4
See Also:
MouseWheelEvent sample code for java.awt.event.MouseWheelEvent definition code for java.awt.event.MouseWheelEvent , MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener , addMouseWheelListener(java.awt.event.MouseWheelListener) sample code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) , getMouseWheelListeners() sample code for java.awt.Component.getMouseWheelListeners() definition code for java.awt.Component.getMouseWheelListeners()

getMouseWheelListeners sample code for java.awt.Component.getMouseWheelListeners() definition code for java.awt.Component.getMouseWheelListeners()

public MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener [] getMouseWheelListeners()
Returns an array of all the mouse wheel listeners registered on this component.

Returns:
all of this component's MouseWheelListeners or an empty array if no mouse wheel listeners are currently registered
Since:
1.4
See Also:
addMouseWheelListener(java.awt.event.MouseWheelListener) sample code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) , removeMouseWheelListener(java.awt.event.MouseWheelListener) sample code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener)

addInputMethodListener sample code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener)

public void addInputMethodListener(InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener  l)
Adds the specified input method listener to receive input method events from this component. A component will only receive input method events from input methods if it also overrides getInputMethodRequests to return an InputMethodRequests instance. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the input method listener
Since:
1.2
See Also:
InputMethodEvent sample code for java.awt.event.InputMethodEvent definition code for java.awt.event.InputMethodEvent , InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener , removeInputMethodListener(java.awt.event.InputMethodListener) sample code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) , getInputMethodListeners() sample code for java.awt.Component.getInputMethodListeners() definition code for java.awt.Component.getInputMethodListeners() , getInputMethodRequests() sample code for java.awt.Component.getInputMethodRequests() definition code for java.awt.Component.getInputMethodRequests()

removeInputMethodListener sample code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener)

public void removeInputMethodListener(InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener  l)
Removes the specified input method listener so that it no longer receives input method events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

Parameters:
l - the input method listener
Since:
1.2
See Also:
InputMethodEvent sample code for java.awt.event.InputMethodEvent definition code for java.awt.event.InputMethodEvent , InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener , addInputMethodListener(java.awt.event.InputMethodListener) sample code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) , getInputMethodListeners() sample code for java.awt.Component.getInputMethodListeners() definition code for java.awt.Component.getInputMethodListeners()

getInputMethodListeners sample code for java.awt.Component.getInputMethodListeners() definition code for java.awt.Component.getInputMethodListeners()

public InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener [] getInputMethodListeners()
Returns an array of all the input method listeners registered on this component.

Returns:
all of this component's InputMethodListeners or an empty array if no input method listeners are currently registered
Since:
1.4
See Also:
addInputMethodListener(java.awt.event.InputMethodListener) sample code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) , removeInputMethodListener(java.awt.event.InputMethodListener) sample code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener)

getListeners sample code for java.awt.Component.<T extends java.util.EventListener>getListeners(java.lang.Class<T>) definition code for java.awt.Component.<T extends java.util.EventListener>getListeners(java.lang.Class<T>)

public <T extends EventListener sample code for java.util.EventListener definition code for java.util.EventListener > T[] getListeners(Class sample code for java.lang.Class definition code for java.lang.Class <T> listenerType)
Returns an array of all the objects currently registered as FooListeners upon this Component. FooListeners are registered using the addFooListener method.

You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a Component c for its mouse listeners with the following code:

MouseListener[] mls = (MouseListener[])(c.getListeners(MouseListener.class));
If no such listeners exist, this method returns an empty array.

Parameters:
listenerType - the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener
Returns:
an array of all objects registered as FooListeners on this component, or an empty array if no such listeners have been added
Throws:
ClassCastException sample code for java.lang.ClassCastException definition code for java.lang.ClassCastException - if listenerType doesn't specify a class or interface that implements java.util.EventListener
Since:
1.3
See Also:
getComponentListeners() sample code for java.awt.Component.getComponentListeners() definition code for java.awt.Component.getComponentListeners() , getFocusListeners() sample code for java.awt.Component.getFocusListeners() definition code for java.awt.Component.getFocusListeners() , getHierarchyListeners() sample code for java.awt.Component.getHierarchyListeners() definition code for java.awt.Component.getHierarchyListeners() , getHierarchyBoundsListeners() sample code for java.awt.Component.getHierarchyBoundsListeners() definition code for java.awt.Component.getHierarchyBoundsListeners() , getKeyListeners() sample code for java.awt.Component.getKeyListeners() definition code for java.awt.Component.getKeyListeners() , getMouseListeners() sample code for java.awt.Component.getMouseListeners() definition code for java.awt.Component.getMouseListeners() , getMouseMotionListeners() sample code for java.awt.Component.getMouseMotionListeners() definition code for java.awt.Component.getMouseMotionListeners() , getMouseWheelListeners() sample code for java.awt.Component.getMouseWheelListeners() definition code for java.awt.Component.getMouseWheelListeners() , getInputMethodListeners() sample code for java.awt.Component.getInputMethodListeners() definition code for java.awt.Component.getInputMethodListeners() , getPropertyChangeListeners() sample code for java.awt.Component.getPropertyChangeListeners() definition code for java.awt.Component.getPropertyChangeListeners()

getInputMethodRequests sample code for java.awt.Component.getInputMethodRequests() definition code for java.awt.Component.getInputMethodRequests()

public InputMethodRequests sample code for java.awt.im.InputMethodRequests definition code for java.awt.im.InputMethodRequests  getInputMethodRequests()
Gets the input method request handler which supports requests from input methods for this component. A component that supports on-the-spot text input must override this method to return an InputMethodRequests instance. At the same time, it also has to handle input method events.

Returns:
the input method request handler for this component, null by default
Since:
1.2
See Also:
addInputMethodListener(java.awt.event.InputMethodListener) sample code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener)

getInputContext sample code for java.awt.Component.getInputContext() definition code for java.awt.Component.getInputContext()

public InputContext sample code for java.awt.im.InputContext definition code for java.awt.im.InputContext  getInputContext()
Gets the input context used by this component for handling the communication with input methods when text is entered in this component. By default, the input context used for the parent component is returned. Components may override this to return a private input context.

Returns:
the input context used by this component; null if no context can be determined
Since:
1.2

enableEvents sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

protected final void enableEvents(long eventsToEnable)
Enables the events defined by the specified event mask parameter to be delivered to this component.

Event types are automatically enabled when a listener for that event type is added to the component.

This method only needs to be invoked by subclasses of Component which desire to have the specified event types delivered to processEvent regardless of whether or not a listener is registered.

Parameters:
eventsToEnable - the event mask defining the event types
Since:
JDK1.1
See Also:
processEvent(java.awt.AWTEvent) sample code for java.awt.Component.processEvent(java.awt.AWTEvent) definition code for java.awt.Component.processEvent(java.awt.AWTEvent) , disableEvents(long) sample code for java.awt.Component.disableEvents(long) definition code for java.awt.Component.disableEvents(long) , AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent

disableEvents sample code for java.awt.Component.disableEvents(long) definition code for java.awt.Component.disableEvents(long)

protected final void disableEvents(long eventsToDisable)
Disables the events defined by the specified event mask parameter from being delivered to this component.

Parameters:
eventsToDisable - the event mask defining the event types
Since:
JDK1.1
See Also:
enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

coalesceEvents sample code for java.awt.Component.coalesceEvents(java.awt.AWTEvent, java.awt.AWTEvent) definition code for java.awt.Component.coalesceEvents(java.awt.AWTEvent, java.awt.AWTEvent)

protected AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  coalesceEvents(AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  existingEvent,
                                  AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  newEvent)
Potentially coalesce an event being posted with an existing event. This method is called by EventQueue.postEvent if an event with the same ID as the event to be posted is found in the queue (both events must have this component as their source). This method either returns a coalesced event which replaces the existing event (and the new event is then discarded), or null to indicate that no combining should be done (add the second event to the end of the queue). Either event parameter may be modified and returned, as the other one is discarded unless null is returned.

This implementation of coalesceEvents coalesces two event types: mouse move (and drag) events, and paint (and update) events. For mouse move events the last event is always returned, causing intermediate moves to be discarded. For paint events, the new event is coalesced into a complex RepaintArea in the peer. The new AWTEvent is always returned.

Parameters:
existingEvent - the event already on the EventQueue
newEvent - the event being posted to the EventQueue
Returns:
a coalesced event, or null indicating that no coalescing was done

processEvent sample code for java.awt.Component.processEvent(java.awt.AWTEvent) definition code for java.awt.Component.processEvent(java.awt.AWTEvent)

protected void processEvent(AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  e)
Processes events occurring on this component. By default this method calls the appropriate process<event type>Event method for the given class of event.

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the event
Since:
JDK1.1
See Also:
processComponentEvent(java.awt.event.ComponentEvent) sample code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent) definition code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent) , processFocusEvent(java.awt.event.FocusEvent) sample code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent) definition code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent) , processKeyEvent(java.awt.event.KeyEvent) sample code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) definition code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) , processMouseEvent(java.awt.event.MouseEvent) sample code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) , processMouseMotionEvent(java.awt.event.MouseEvent) sample code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent) , processInputMethodEvent(java.awt.event.InputMethodEvent) sample code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent) definition code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent) , processHierarchyEvent(java.awt.event.HierarchyEvent) sample code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent) definition code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent) , processMouseWheelEvent(java.awt.event.MouseWheelEvent) sample code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent) definition code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent)

processComponentEvent sample code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent) definition code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent)

protected void processComponentEvent(ComponentEvent sample code for java.awt.event.ComponentEvent definition code for java.awt.event.ComponentEvent  e)
Processes component events occurring on this component by dispatching them to any registered ComponentListener objects.

This method is not called unless component events are enabled for this component. Component events are enabled when one of the following occurs:

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the component event
Since:
JDK1.1
See Also:
ComponentEvent sample code for java.awt.event.ComponentEvent definition code for java.awt.event.ComponentEvent , ComponentListener sample code for java.awt.event.ComponentListener definition code for java.awt.event.ComponentListener , addComponentListener(java.awt.event.ComponentListener) sample code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

processFocusEvent sample code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent) definition code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent)

protected void processFocusEvent(FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent  e)
Processes focus events occurring on this component by dispatching them to any registered FocusListener objects.

This method is not called unless focus events are enabled for this component. Focus events are enabled when one of the following occurs:

If focus events are enabled for a Component, the current KeyboardFocusManager determines whether or not a focus event should be dispatched to registered FocusListener objects. If the events are to be dispatched, the KeyboardFocusManager calls the Component's dispatchEvent method, which results in a call to the Component's processFocusEvent method.

If focus events are enabled for a Component, calling the Component's dispatchEvent method with a FocusEvent as the argument will result in a call to the Component's processFocusEvent method regardless of the current KeyboardFocusManager.

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the focus event
Since:
JDK1.1
See Also:
FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent , FocusListener sample code for java.awt.event.FocusListener definition code for java.awt.event.FocusListener , KeyboardFocusManager sample code for java.awt.KeyboardFocusManager definition code for java.awt.KeyboardFocusManager , addFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long) , dispatchEvent(java.awt.AWTEvent) sample code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) definition code for java.awt.Component.dispatchEvent(java.awt.AWTEvent)

processKeyEvent sample code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) definition code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent)

protected void processKeyEvent(KeyEvent sample code for java.awt.event.KeyEvent definition code for java.awt.event.KeyEvent  e)
Processes key events occurring on this component by dispatching them to any registered KeyListener objects.

This method is not called unless key events are enabled for this component. Key events are enabled when one of the following occurs:

If key events are enabled for a Component, the current KeyboardFocusManager determines whether or not a key event should be dispatched to registered KeyListener objects. The DefaultKeyboardFocusManager will not dispatch key events to a Component that is not the focus owner or is not showing.

As of J2SE 1.4, KeyEvents are redirected to the focus owner. Please see the Focus Specification for further information.

Calling a Component's dispatchEvent method with a KeyEvent as the argument will result in a call to the Component's processKeyEvent method regardless of the current KeyboardFocusManager as long as the component is showing, focused, and enabled, and key events are enabled on it.

If the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the key event
Since:
JDK1.1
See Also:
KeyEvent sample code for java.awt.event.KeyEvent definition code for java.awt.event.KeyEvent , KeyListener sample code for java.awt.event.KeyListener definition code for java.awt.event.KeyListener , KeyboardFocusManager sample code for java.awt.KeyboardFocusManager definition code for java.awt.KeyboardFocusManager , DefaultKeyboardFocusManager sample code for java.awt.DefaultKeyboardFocusManager definition code for java.awt.DefaultKeyboardFocusManager , processEvent(java.awt.AWTEvent) sample code for java.awt.Component.processEvent(java.awt.AWTEvent) definition code for java.awt.Component.processEvent(java.awt.AWTEvent) , dispatchEvent(java.awt.AWTEvent) sample code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) definition code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) , addKeyListener(java.awt.event.KeyListener) sample code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long) , isShowing() sample code for java.awt.Component.isShowing() definition code for java.awt.Component.isShowing()

processMouseEvent sample code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent)

protected void processMouseEvent(MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent  e)
Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects.

This method is not called unless mouse events are enabled for this component. Mouse events are enabled when one of the following occurs:

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the mouse event
Since:
JDK1.1
See Also:
MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent , MouseListener sample code for java.awt.event.MouseListener definition code for java.awt.event.MouseListener , addMouseListener(java.awt.event.MouseListener) sample code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.addMouseListener(java.awt.event.MouseListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

processMouseMotionEvent sample code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent)

protected void processMouseMotionEvent(MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent  e)
Processes mouse motion events occurring on this component by dispatching them to any registered MouseMotionListener objects.

This method is not called unless mouse motion events are enabled for this component. Mouse motion events are enabled when one of the following occurs:

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the mouse motion event
Since:
JDK1.1
See Also:
MouseEvent sample code for java.awt.event.MouseEvent definition code for java.awt.event.MouseEvent , MouseMotionListener sample code for java.awt.event.MouseMotionListener definition code for java.awt.event.MouseMotionListener , addMouseMotionListener(java.awt.event.MouseMotionListener) sample code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

processMouseWheelEvent sample code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent) definition code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent)

protected void processMouseWheelEvent(MouseWheelEvent sample code for java.awt.event.MouseWheelEvent definition code for java.awt.event.MouseWheelEvent  e)
Processes mouse wheel events occurring on this component by dispatching them to any registered MouseWheelListener objects.

This method is not called unless mouse wheel events are enabled for this component. Mouse wheel events are enabled when one of the following occurs:

For information on how mouse wheel events are dispatched, see the class description for MouseWheelEvent sample code for java.awt.event.MouseWheelEvent definition code for java.awt.event.MouseWheelEvent .

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the mouse wheel event
Since:
1.4
See Also:
MouseWheelEvent sample code for java.awt.event.MouseWheelEvent definition code for java.awt.event.MouseWheelEvent , MouseWheelListener sample code for java.awt.event.MouseWheelListener definition code for java.awt.event.MouseWheelListener , addMouseWheelListener(java.awt.event.MouseWheelListener) sample code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.addMouseWheelListener(java.awt.event.MouseWheelListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

processInputMethodEvent sample code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent) definition code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent)

protected void processInputMethodEvent(InputMethodEvent sample code for java.awt.event.InputMethodEvent definition code for java.awt.event.InputMethodEvent  e)
Processes input method events occurring on this component by dispatching them to any registered InputMethodListener objects.

This method is not called unless input method events are enabled for this component. Input method events are enabled when one of the following occurs:

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the input method event
Since:
1.2
See Also:
InputMethodEvent sample code for java.awt.event.InputMethodEvent definition code for java.awt.event.InputMethodEvent , InputMethodListener sample code for java.awt.event.InputMethodListener definition code for java.awt.event.InputMethodListener , addInputMethodListener(java.awt.event.InputMethodListener) sample code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

processHierarchyEvent sample code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent) definition code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent)

protected void processHierarchyEvent(HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent  e)
Processes hierarchy events occurring on this component by dispatching them to any registered HierarchyListener objects.

This method is not called unless hierarchy events are enabled for this component. Hierarchy events are enabled when one of the following occurs:

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the hierarchy event
Since:
1.3
See Also:
HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent , HierarchyListener sample code for java.awt.event.HierarchyListener definition code for java.awt.event.HierarchyListener , addHierarchyListener(java.awt.event.HierarchyListener) sample code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

processHierarchyBoundsEvent sample code for java.awt.Component.processHierarchyBoundsEvent(java.awt.event.HierarchyEvent) definition code for java.awt.Component.processHierarchyBoundsEvent(java.awt.event.HierarchyEvent)

protected void processHierarchyBoundsEvent(HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent  e)
Processes hierarchy bounds events occurring on this component by dispatching them to any registered HierarchyBoundsListener objects.

This method is not called unless hierarchy bounds events are enabled for this component. Hierarchy bounds events are enabled when one of the following occurs:

Note that if the event parameter is null the behavior is unspecified and may result in an exception.

Parameters:
e - the hierarchy event
Since:
1.3
See Also:
HierarchyEvent sample code for java.awt.event.HierarchyEvent definition code for java.awt.event.HierarchyEvent , HierarchyBoundsListener sample code for java.awt.event.HierarchyBoundsListener definition code for java.awt.event.HierarchyBoundsListener , addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) sample code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) , enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

handleEvent sample code for java.awt.Component.handleEvent(java.awt.Event) definition code for java.awt.Component.handleEvent(java.awt.Event)

@Deprecated
public boolean handleEvent(Event sample code for java.awt.Event definition code for java.awt.Event  evt)
Deprecated. As of JDK version 1.1 replaced by processEvent(AWTEvent).


mouseDown sample code for java.awt.Component.mouseDown(java.awt.Event, int, int) definition code for java.awt.Component.mouseDown(java.awt.Event, int, int)

@Deprecated
public boolean mouseDown(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                    int x,
                                    int y)
Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).


mouseDrag sample code for java.awt.Component.mouseDrag(java.awt.Event, int, int) definition code for java.awt.Component.mouseDrag(java.awt.Event, int, int)

@Deprecated
public boolean mouseDrag(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                    int x,
                                    int y)
Deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).


mouseUp sample code for java.awt.Component.mouseUp(java.awt.Event, int, int) definition code for java.awt.Component.mouseUp(java.awt.Event, int, int)

@Deprecated
public boolean mouseUp(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                  int x,
                                  int y)
Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).


mouseMove sample code for java.awt.Component.mouseMove(java.awt.Event, int, int) definition code for java.awt.Component.mouseMove(java.awt.Event, int, int)

@Deprecated
public boolean mouseMove(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                    int x,
                                    int y)
Deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).


mouseEnter sample code for java.awt.Component.mouseEnter(java.awt.Event, int, int) definition code for java.awt.Component.mouseEnter(java.awt.Event, int, int)

@Deprecated
public boolean mouseEnter(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                     int x,
                                     int y)
Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).


mouseExit sample code for java.awt.Component.mouseExit(java.awt.Event, int, int) definition code for java.awt.Component.mouseExit(java.awt.Event, int, int)

@Deprecated
public boolean mouseExit(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                    int x,
                                    int y)
Deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).


keyDown sample code for java.awt.Component.keyDown(java.awt.Event, int) definition code for java.awt.Component.keyDown(java.awt.Event, int)

@Deprecated
public boolean keyDown(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                  int key)
Deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent).


keyUp sample code for java.awt.Component.keyUp(java.awt.Event, int) definition code for java.awt.Component.keyUp(java.awt.Event, int)

@Deprecated
public boolean keyUp(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                int key)
Deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent).


action sample code for java.awt.Component.action(java.awt.Event, java.lang.Object) definition code for java.awt.Component.action(java.awt.Event, java.lang.Object)

@Deprecated
public boolean action(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                 Object sample code for java.lang.Object definition code for java.lang.Object  what)
Deprecated. As of JDK version 1.1, should register this component as ActionListener on component which fires action events.


addNotify sample code for java.awt.Component.addNotify() definition code for java.awt.Component.addNotify()

public void addNotify()
Makes this Component displayable by connecting it to a native screen resource. This method is called internally by the toolkit and should not be called directly by programs.

Since:
JDK1.0
See Also:
isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , removeNotify() sample code for java.awt.Component.removeNotify() definition code for java.awt.Component.removeNotify()

removeNotify sample code for java.awt.Component.removeNotify() definition code for java.awt.Component.removeNotify()

public void removeNotify()
Makes this Component undisplayable by destroying it native screen resource.

This method is called by the toolkit internally and should not be called directly by programs. Code overriding this method should call super.removeNotify as the first line of the overriding method.

Since:
JDK1.0
See Also:
isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , addNotify() sample code for java.awt.Component.addNotify() definition code for java.awt.Component.addNotify()

gotFocus sample code for java.awt.Component.gotFocus(java.awt.Event, java.lang.Object) definition code for java.awt.Component.gotFocus(java.awt.Event, java.lang.Object)

@Deprecated
public boolean gotFocus(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                   Object sample code for java.lang.Object definition code for java.lang.Object  what)
Deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent).


lostFocus sample code for java.awt.Component.lostFocus(java.awt.Event, java.lang.Object) definition code for java.awt.Component.lostFocus(java.awt.Event, java.lang.Object)

@Deprecated
public boolean lostFocus(Event sample code for java.awt.Event definition code for java.awt.Event  evt,
                                    Object sample code for java.lang.Object definition code for java.lang.Object  what)
Deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent).


isFocusTraversable sample code for java.awt.Component.isFocusTraversable() definition code for java.awt.Component.isFocusTraversable()

@Deprecated
public boolean isFocusTraversable()
Deprecated. As of 1.4, replaced by isFocusable().

Returns whether this Component can become the focus owner.

Returns:
true if this Component is focusable; false otherwise
Since:
JDK1.1
See Also:
setFocusable(boolean) sample code for java.awt.Component.setFocusable(boolean) definition code for java.awt.Component.setFocusable(boolean)

isFocusable sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable()

public boolean isFocusable()
Returns whether this Component can be focused.

Returns:
true if this Component is focusable; false otherwise.
Since:
1.4
See Also:
setFocusable(boolean) sample code for java.awt.Component.setFocusable(boolean) definition code for java.awt.Component.setFocusable(boolean)

setFocusable sample code for java.awt.Component.setFocusable(boolean) definition code for java.awt.Component.setFocusable(boolean)

public void setFocusable(boolean focusable)
Sets the focusable state of this Component to the specified value. This value overrides the Component's default focusability.

Parameters:
focusable - indicates whether this Component is focusable
Since:
1.4
See Also:
isFocusable() sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable()

setFocusTraversalKeys sample code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set<? extends java.awt.AWTKeyStroke>) definition code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set<? extends java.awt.AWTKeyStroke>)

public void setFocusTraversalKeys(int id,
                                  Set sample code for java.util.Set definition code for java.util.Set <? extends AWTKeyStroke sample code for java.awt.AWTKeyStroke definition code for java.awt.AWTKeyStroke > keystrokes)
Sets the focus traversal keys for a given traversal operation for this Component.

The default values for a Component's focus traversal keys are implementation-dependent. Sun recommends that all implementations for a particular native platform use the same default values. The recommendations for Windows and Unix are listed below. These recommendations are used in the Sun AWT implementations.

Identifier Meaning Default
KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS Normal forward keyboard traversal TAB on KEY_PRESSED, CTRL-TAB on KEY_PRESSED
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS Normal reverse keyboard traversal SHIFT-TAB on KEY_PRESSED, CTRL-SHIFT-TAB on KEY_PRESSED
KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS Go up one focus traversal cycle none
To disable a traversal key, use an empty Set; Collections.EMPTY_SET is recommended.

Using the AWTKeyStroke API, client code can specify on which of two specific KeyEvents, KEY_PRESSED or KEY_RELEASED, the focus traversal operation will occur. Regardless of which KeyEvent is specified, however, all KeyEvents related to the focus traversal key, including the associated KEY_TYPED event, will be consumed, and will not be dispatched to any Component. It is a runtime error to specify a KEY_TYPED event as mapping to a focus traversal operation, or to map the same event to multiple default focus traversal operations.

If a value of null is specified for the Set, this Component inherits the Set from its parent. If all ancestors of this Component have null specified for the Set, then the current KeyboardFocusManager's default Set is used.

Parameters:
id - one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
keystrokes - the Set of AWTKeyStroke for the specified operation
Throws:
IllegalArgumentException sample code for java.lang.IllegalArgumentException definition code for java.lang.IllegalArgumentException - if id is not one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or if keystrokes contains null, or if any Object in keystrokes is not an AWTKeyStroke, or if any keystroke represents a KEY_TYPED event, or if any keystroke already maps to another focus traversal operation for this Component
Since:
1.4
See Also:
getFocusTraversalKeys(int) sample code for java.awt.Component.getFocusTraversalKeys(int) definition code for java.awt.Component.getFocusTraversalKeys(int) , KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS sample code for java.awt.KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS definition code for java.awt.KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS , KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS sample code for java.awt.KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS definition code for java.awt.KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS , KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS sample code for java.awt.KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS definition code for java.awt.KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS

getFocusTraversalKeys sample code for java.awt.Component.getFocusTraversalKeys(int) definition code for java.awt.Component.getFocusTraversalKeys(int)

public Set sample code for java.util.Set definition code for java.util.Set <AWTKeyStroke sample code for java.awt.AWTKeyStroke definition code for java.awt.AWTKeyStroke > getFocusTraversalKeys(int id)
Returns the Set of focus traversal keys for a given traversal operation for this Component. (See setFocusTraversalKeys for a full description of each key.)

If a Set of traversal keys has not been explicitly defined for this Component, then this Component's parent's Set is returned. If no Set has been explicitly defined for any of this Component's ancestors, then the current KeyboardFocusManager's default Set is returned.

Parameters:
id - one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
Returns:
the Set of AWTKeyStrokes for the specified operation. The Set will be unmodifiable, and may be empty. null will never be returned.
Throws:
IllegalArgumentException sample code for java.lang.IllegalArgumentException definition code for java.lang.IllegalArgumentException - if id is not one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
Since:
1.4
See Also:
setFocusTraversalKeys(int, java.util.Set) sample code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) definition code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) , KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS sample code for java.awt.KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS definition code for java.awt.KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS , KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS sample code for java.awt.KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS definition code for java.awt.KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS , KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS sample code for java.awt.KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS definition code for java.awt.KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS

areFocusTraversalKeysSet sample code for java.awt.Component.areFocusTraversalKeysSet(int) definition code for java.awt.Component.areFocusTraversalKeysSet(int)

public boolean areFocusTraversalKeysSet(int id)
Returns whether the Set of focus traversal keys for the given focus traversal operation has been explicitly defined for this Component. If this method returns false, this Component is inheriting the Set from an ancestor, or from the current KeyboardFocusManager.

Parameters:
id - one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
Returns:
true if the the Set of focus traversal keys for the given focus traversal operation has been explicitly defined for this Component; false otherwise.
Throws:
IllegalArgumentException sample code for java.lang.IllegalArgumentException definition code for java.lang.IllegalArgumentException - if id is not one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
Since:
1.4

setFocusTraversalKeysEnabled sample code for java.awt.Component.setFocusTraversalKeysEnabled(boolean) definition code for java.awt.Component.setFocusTraversalKeysEnabled(boolean)

public void setFocusTraversalKeysEnabled(boolean focusTraversalKeysEnabled)
Sets whether focus traversal keys are enabled for this Component. Components for which focus traversal keys are disabled receive key events for focus traversal keys. Components for which focus traversal keys are enabled do not see these events; instead, the events are automatically converted to traversal operations.

Parameters:
focusTraversalKeysEnabled - whether focus traversal keys are enabled for this Component
Since:
1.4
See Also:
getFocusTraversalKeysEnabled() sample code for java.awt.Component.getFocusTraversalKeysEnabled() definition code for java.awt.Component.getFocusTraversalKeysEnabled() , setFocusTraversalKeys(int, java.util.Set) sample code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) definition code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) , getFocusTraversalKeys(int) sample code for java.awt.Component.getFocusTraversalKeys(int) definition code for java.awt.Component.getFocusTraversalKeys(int)

getFocusTraversalKeysEnabled sample code for java.awt.Component.getFocusTraversalKeysEnabled() definition code for java.awt.Component.getFocusTraversalKeysEnabled()

public boolean getFocusTraversalKeysEnabled()
Returns whether focus traversal keys are enabled for this Component. Components for which focus traversal keys are disabled receive key events for focus traversal keys. Components for which focus traversal keys are enabled do not see these events; instead, the events are automatically converted to traversal operations.

Returns:
whether focus traversal keys are enabled for this Component
Since:
1.4
See Also:
setFocusTraversalKeysEnabled(boolean) sample code for java.awt.Component.setFocusTraversalKeysEnabled(boolean) definition code for java.awt.Component.setFocusTraversalKeysEnabled(boolean) , setFocusTraversalKeys(int, java.util.Set) sample code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) definition code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) , getFocusTraversalKeys(int) sample code for java.awt.Component.getFocusTraversalKeys(int) definition code for java.awt.Component.getFocusTraversalKeys(int)

requestFocus sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus()

public void requestFocus()
Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window. This component must be displayable, visible, and focusable for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event. If this request is denied because this Component's top-level Window cannot become the focused Window, the request will be remembered and will be granted when the Window is later focused by the user.

This method cannot be used to set the focus owner to no Component at all. Use KeyboardFocusManager.clearGlobalFocusOwner() instead.

Because the focus behavior of this method is platform-dependent, developers are strongly encouraged to use requestFocusInWindow when possible.

Since:
JDK1.0
See Also:
requestFocusInWindow() sample code for java.awt.Component.requestFocusInWindow() definition code for java.awt.Component.requestFocusInWindow() , FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent , addFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) , isFocusable() sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable() , isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , KeyboardFocusManager.clearGlobalFocusOwner() sample code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner() definition code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner()

requestFocus sample code for java.awt.Component.requestFocus(boolean) definition code for java.awt.Component.requestFocus(boolean)

protected boolean requestFocus(boolean temporary)
Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window. This component must be displayable, visible, and focusable for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event. If this request is denied because this component's top-level window cannot become the focused window, the request will be remembered and will be granted when the window is later focused by the user.

This method returns a boolean value. If false is returned, the request is guaranteed to fail. If true is returned, the request will succeed unless it is vetoed, or an extraordinary event, such as disposal of the component's peer, occurs before the request can be granted by the native windowing system. Again, while a return value of true indicates that the request is likely to succeed, developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event.

This method cannot be used to set the focus owner to no component at all. Use KeyboardFocusManager.clearGlobalFocusOwner instead.

Because the focus behavior of this method is platform-dependent, developers are strongly encouraged to use requestFocusInWindow when possible.

Every effort will be made to ensure that FocusEvents generated as a result of this request will have the specified temporary value. However, because specifying an arbitrary temporary state may not be implementable on all native windowing systems, correct behavior for this method can be guaranteed only for lightweight Components. This method is not intended for general use, but exists instead as a hook for lightweight component libraries, such as Swing.

Parameters:
temporary - true if the focus change is temporary, such as when the window loses the focus; for more information on temporary focus changes see the Focus Specification
Returns:
false if the focus change request is guaranteed to fail; true if it is likely to succeed
Since:
1.4
See Also:
FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent , addFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) , isFocusable() sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable() , isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , KeyboardFocusManager.clearGlobalFocusOwner() sample code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner() definition code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner()

requestFocusInWindow sample code for java.awt.Component.requestFocusInWindow() definition code for java.awt.Component.requestFocusInWindow()

public boolean requestFocusInWindow()
Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window. This component must be displayable, visible, and focusable for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event.

This method returns a boolean value. If false is returned, the request is guaranteed to fail. If true is returned, the request will succeed unless it is vetoed, or an extraordinary event, such as disposal of the Component's peer, occurs before the request can be granted by the native windowing system. Again, while a return value of true indicates that the request is likely to succeed, developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event.

This method cannot be used to set the focus owner to no Component at all. Use KeyboardFocusManager.clearGlobalFocusOwner() instead.

The focus behavior of this method can be implemented uniformly across platforms, and thus developers are strongly encouraged to use this method over requestFocus when possible. Code which relies on requestFocus may exhibit different focus behavior on different platforms.

Returns:
false if the focus change request is guaranteed to fail; true if it is likely to succeed
Since:
1.4
See Also:
requestFocus() sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus() , FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent , addFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) , isFocusable() sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable() , isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , KeyboardFocusManager.clearGlobalFocusOwner() sample code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner() definition code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner()

requestFocusInWindow sample code for java.awt.Component.requestFocusInWindow(boolean) definition code for java.awt.Component.requestFocusInWindow(boolean)

protected boolean requestFocusInWindow(boolean temporary)
Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window. This component must be displayable, visible, and focusable for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event.

This method returns a boolean value. If false is returned, the request is guaranteed to fail. If true is returned, the request will succeed unless it is vetoed, or an extraordinary event, such as disposal of the component's peer, occurs before the request can be granted by the native windowing system. Again, while a return value of true indicates that the request is likely to succeed, developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event.

This method cannot be used to set the focus owner to no component at all. Use KeyboardFocusManager.clearGlobalFocusOwner instead.

The focus behavior of this method can be implemented uniformly across platforms, and thus developers are strongly encouraged to use this method over requestFocus when possible. Code which relies on requestFocus may exhibit different focus behavior on different platforms.

Every effort will be made to ensure that FocusEvents generated as a result of this request will have the specified temporary value. However, because specifying an arbitrary temporary state may not be implementable on all native windowing systems, correct behavior for this method can be guaranteed only for lightweight components. This method is not intended for general use, but exists instead as a hook for lightweight component libraries, such as Swing.

Parameters:
temporary - true if the focus change is temporary, such as when the window loses the focus; for more information on temporary focus changes see the Focus Specification
Returns:
false if the focus change request is guaranteed to fail; true if it is likely to succeed
Since:
1.4
See Also:
requestFocus() sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus() , FocusEvent sample code for java.awt.event.FocusEvent definition code for java.awt.event.FocusEvent , addFocusListener(java.awt.event.FocusListener) sample code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.addFocusListener(java.awt.event.FocusListener) , isFocusable() sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable() , isDisplayable() sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , KeyboardFocusManager.clearGlobalFocusOwner() sample code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner() definition code for java.awt.KeyboardFocusManager.clearGlobalFocusOwner()

transferFocus sample code for java.awt.Component.transferFocus() definition code for java.awt.Component.transferFocus()

public void transferFocus()
Transfers the focus to the next component, as though this Component were the focus owner.

Since:
JDK1.1
See Also:
requestFocus() sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus()

getFocusCycleRootAncestor sample code for java.awt.Component.getFocusCycleRootAncestor() definition code for java.awt.Component.getFocusCycleRootAncestor()

public Container sample code for java.awt.Container definition code for java.awt.Container  getFocusCycleRootAncestor()
Returns the Container which is the focus cycle root of this Component's focus traversal cycle. Each focus traversal cycle has only a single focus cycle root and each Component which is not a Container belongs to only a single focus traversal cycle. Containers which are focus cycle roots belong to two cycles: one rooted at the Container itself, and one rooted at the Container's nearest focus-cycle-root ancestor. For such Containers, this method will return the Container's nearest focus-cycle- root ancestor.

Returns:
this Component's nearest focus-cycle-root ancestor
Since:
1.4
See Also:
Container.isFocusCycleRoot() sample code for java.awt.Container.isFocusCycleRoot() definition code for java.awt.Container.isFocusCycleRoot()

isFocusCycleRoot sample code for java.awt.Component.isFocusCycleRoot(java.awt.Container) definition code for java.awt.Component.isFocusCycleRoot(java.awt.Container)

public boolean isFocusCycleRoot(Container sample code for java.awt.Container definition code for java.awt.Container  container)
Returns whether the specified Container is the focus cycle root of this Component's focus traversal cycle. Each focus traversal cycle has only a single focus cycle root and each Component which is not a Container belongs to only a single focus traversal cycle.

Parameters:
container - the Container to be tested
Returns:
true if the specified Container is a focus-cycle- root of this Component; false otherwise
Since:
1.4
See Also:
Container.isFocusCycleRoot() sample code for java.awt.Container.isFocusCycleRoot() definition code for java.awt.Container.isFocusCycleRoot()

nextFocus sample code for java.awt.Component.nextFocus() definition code for java.awt.Component.nextFocus()

@Deprecated
public void nextFocus()
Deprecated. As of JDK version 1.1, replaced by transferFocus().


transferFocusBackward sample code for java.awt.Component.transferFocusBackward() definition code for java.awt.Component.transferFocusBackward()

public void transferFocusBackward()
Transfers the focus to the previous component, as though this Component were the focus owner.

Since:
1.4
See Also:
requestFocus() sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus()

transferFocusUpCycle sample code for java.awt.Component.transferFocusUpCycle() definition code for java.awt.Component.transferFocusUpCycle()

public void transferFocusUpCycle()
Transfers the focus up one focus traversal cycle. Typically, the focus owner is set to this Component's focus cycle root, and the current focus cycle root is set to the new focus owner's focus cycle root. If, however, this Component's focus cycle root is a Window, then the focus owner is set to the focus cycle root's default Component to focus, and the current focus cycle root is unchanged.

Since:
1.4
See Also:
requestFocus() sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus() , Container.isFocusCycleRoot() sample code for java.awt.Container.isFocusCycleRoot() definition code for java.awt.Container.isFocusCycleRoot() , Container.setFocusCycleRoot(boolean) sample code for java.awt.Container.setFocusCycleRoot(boolean) definition code for java.awt.Container.setFocusCycleRoot(boolean)

hasFocus sample code for java.awt.Component.hasFocus() definition code for java.awt.Component.hasFocus()

public boolean hasFocus()
Returns true if this Component is the focus owner. This method is obsolete, and has been replaced by isFocusOwner().

Returns:
true if this Component is the focus owner; false otherwise
Since:
1.2

isFocusOwner sample code for java.awt.Component.isFocusOwner() definition code for java.awt.Component.isFocusOwner()

public boolean isFocusOwner()
Returns true if this Component is the focus owner.

Returns:
true if this Component is the focus owner; false otherwise
Since:
1.4

add sample code for java.awt.Component.add(java.awt.PopupMenu) definition code for java.awt.Component.add(java.awt.PopupMenu)

public void add(PopupMenu sample code for java.awt.PopupMenu definition code for java.awt.PopupMenu  popup)
Adds the specified popup menu to the component.

Parameters:
popup - the popup menu to be added to the component.
Since:
JDK1.1
See Also:
remove(MenuComponent) sample code for java.awt.Component.remove(java.awt.MenuComponent) definition code for java.awt.Component.remove(java.awt.MenuComponent)

remove sample code for java.awt.Component.remove(java.awt.MenuComponent) definition code for java.awt.Component.remove(java.awt.MenuComponent)

public void remove(MenuComponent sample code for java.awt.MenuComponent definition code for java.awt.MenuComponent  popup)
Removes the specified popup menu from the component.

Specified by:
remove sample code for java.awt.MenuContainer.remove(java.awt.MenuComponent) definition code for java.awt.MenuContainer.remove(java.awt.MenuComponent) in interface MenuContainer sample code for java.awt.MenuContainer definition code for java.awt.MenuContainer
Parameters:
popup - the popup menu to be removed
Since:
JDK1.1
See Also:
add(PopupMenu) sample code for java.awt.Component.add(java.awt.PopupMenu) definition code for java.awt.Component.add(java.awt.PopupMenu)

paramString sample code for java.awt.Component.paramString() definition code for java.awt.Component.paramString()

protected String sample code for java.lang.String definition code for java.lang.String  paramString()
Returns a string representing the state of this component. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Returns:
a string representation of this component's state
Since:
JDK1.0

toString sample code for java.awt.Component.toString() definition code for java.awt.Component.toString()

public String sample code for java.lang.String definition code for java.lang.String  toString()
Returns a string representation of this component and its values.

Overrides:
toString sample code for java.lang.Object.toString() definition code for java.lang.Object.toString() in class Object sample code for java.lang.Object definition code for java.lang.Object
Returns:
a string representation of this component
Since:
JDK1.0

list sample code for java.awt.Component.list() definition code for java.awt.Component.list()

public void list()
Prints a listing of this component to the standard system output stream System.out.

Since:
JDK1.0
See Also:
System.out sample code for java.lang.System.out definition code for java.lang.System.out

list sample code for java.awt.Component.list(java.io.PrintStream) definition code for java.awt.Component.list(java.io.PrintStream)

public void list(PrintStream sample code for java.io.PrintStream definition code for java.io.PrintStream  out)
Prints a listing of this component to the specified output stream.

Parameters:
out - a print stream
Since:
JDK1.0

list sample code for java.awt.Component.list(java.io.PrintStream, int) definition code for java.awt.Component.list(java.io.PrintStream, int)

public void list(PrintStream sample code for java.io.PrintStream definition code for java.io.PrintStream  out,
                 int indent)
Prints out a list, starting at the specified indentation, to the specified print stream.

Parameters:
out - a print stream
indent - number of spaces to indent
Since:
JDK1.0
See Also:
PrintStream.println(java.lang.Object) sample code for java.io.PrintStream.println(java.lang.Object) definition code for java.io.PrintStream.println(java.lang.Object)

list sample code for java.awt.Component.list(java.io.PrintWriter) definition code for java.awt.Component.list(java.io.PrintWriter)

public void list(PrintWriter sample code for java.io.PrintWriter definition code for java.io.PrintWriter  out)
Prints a listing to the specified print writer.

Parameters:
out - the print writer to print to
Since:
JDK1.1

list sample code for java.awt.Component.list(java.io.PrintWriter, int) definition code for java.awt.Component.list(java.io.PrintWriter, int)

public void list(PrintWriter sample code for java.io.PrintWriter definition code for java.io.PrintWriter  out,
                 int indent)
Prints out a list, starting at the specified indentation, to the specified print writer.

Parameters:
out - the print writer to print to
indent - the number of spaces to indent
Since:
JDK1.1
See Also:
PrintStream.println(java.lang.Object) sample code for java.io.PrintStream.println(java.lang.Object) definition code for java.io.PrintStream.println(java.lang.Object)

addPropertyChangeListener sample code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener)

public void addPropertyChangeListener(PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
Adds a PropertyChangeListener to the listener list. The listener is registered for all bound properties of this class, including the following: Note that if this Component is inheriting a bound property, then no event will be fired in response to a change in the inherited property.

If listener is null, no exception is thrown and no action is performed.

Parameters:
listener - the property change listener to be added
See Also:
removePropertyChangeListener(java.beans.PropertyChangeListener) sample code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) , getPropertyChangeListeners() sample code for java.awt.Component.getPropertyChangeListeners() definition code for java.awt.Component.getPropertyChangeListeners() , addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) sample code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

removePropertyChangeListener sample code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener)

public void removePropertyChangeListener(PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
Removes a PropertyChangeListener from the listener list. This method should be used to remove PropertyChangeListeners that were registered for all bound properties of this class.

If listener is null, no exception is thrown and no action is performed.

Parameters:
listener - the PropertyChangeListener to be removed
See Also:
addPropertyChangeListener(java.beans.PropertyChangeListener) sample code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) , getPropertyChangeListeners() sample code for java.awt.Component.getPropertyChangeListeners() definition code for java.awt.Component.getPropertyChangeListeners() , removePropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener) sample code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

getPropertyChangeListeners sample code for java.awt.Component.getPropertyChangeListeners() definition code for java.awt.Component.getPropertyChangeListeners()

public PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener [] getPropertyChangeListeners()
Returns an array of all the property change listeners registered on this component.

Returns:
all of this component's PropertyChangeListeners or an empty array if no property change listeners are currently registered
Since:
1.4
See Also:
addPropertyChangeListener(java.beans.PropertyChangeListener) sample code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) , removePropertyChangeListener(java.beans.PropertyChangeListener) sample code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) , getPropertyChangeListeners(java.lang.String) sample code for java.awt.Component.getPropertyChangeListeners(java.lang.String) definition code for java.awt.Component.getPropertyChangeListeners(java.lang.String) , PropertyChangeSupport.getPropertyChangeListeners() sample code for java.beans.PropertyChangeSupport.getPropertyChangeListeners() definition code for java.beans.PropertyChangeSupport.getPropertyChangeListeners()

addPropertyChangeListener sample code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

public void addPropertyChangeListener(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                                      PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
Adds a PropertyChangeListener to the listener list for a specific property. The specified property may be user-defined, or one of the following: Note that if this Component is inheriting a bound property, then no event will be fired in response to a change in the inherited property.

If propertyName or listener is null, no exception is thrown and no action is taken.

Parameters:
propertyName - one of the property names listed above
listener - the property change listener to be added
See Also:
removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) sample code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) , getPropertyChangeListeners(java.lang.String) sample code for java.awt.Component.getPropertyChangeListeners(java.lang.String) definition code for java.awt.Component.getPropertyChangeListeners(java.lang.String) , addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) sample code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

removePropertyChangeListener sample code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

public void removePropertyChangeListener(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                                         PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
Removes a PropertyChangeListener from the listener list for a specific property. This method should be used to remove PropertyChangeListeners that were registered for a specific bound property.

If propertyName or listener is null, no exception is thrown and no action is taken.

Parameters:
propertyName - a valid property name
listener - the PropertyChangeListener to be removed
See Also:
addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) sample code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) , getPropertyChangeListeners(java.lang.String) sample code for java.awt.Component.getPropertyChangeListeners(java.lang.String) definition code for java.awt.Component.getPropertyChangeListeners(java.lang.String) , removePropertyChangeListener(java.beans.PropertyChangeListener) sample code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener)

getPropertyChangeListeners sample code for java.awt.Component.getPropertyChangeListeners(java.lang.String) definition code for java.awt.Component.getPropertyChangeListeners(java.lang.String)

public PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener [] getPropertyChangeListeners(String sample code for java.lang.String definition code for java.lang.String  propertyName)
Returns an array of all the listeners which have been associated with the named property.

Returns:
all of the PropertyChangeListeners associated with the named property; if no such listeners have been added or if propertyName is null, an empty array is returned
Since:
1.4
See Also:
addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) sample code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) , removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) sample code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener) , getPropertyChangeListeners() sample code for java.awt.Component.getPropertyChangeListeners() definition code for java.awt.Component.getPropertyChangeListeners()

firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) definition code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

protected void firePropertyChange(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                                  Object sample code for java.lang.Object definition code for java.lang.Object  oldValue,
                                  Object sample code for java.lang.Object definition code for java.lang.Object  newValue)
Support for reporting bound property changes for Object properties. This method can be called when a bound property has changed and it will send the appropriate PropertyChangeEvent to any registered PropertyChangeListeners.

Parameters:
propertyName - the property whose value has changed
oldValue - the property's previous value
newValue - the property's new value

firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, boolean, boolean) definition code for java.awt.Component.firePropertyChange(java.lang.String, boolean, boolean)

protected void firePropertyChange(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                                  boolean oldValue,
                                  boolean newValue)
Support for reporting bound property changes for boolean properties. This method can be called when a bound property has changed and it will send the appropriate PropertyChangeEvent to any registered PropertyChangeListeners.

Parameters:
propertyName - the property whose value has changed
oldValue - the property's previous value
newValue - the property's new value

firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, int, int) definition code for java.awt.Component.firePropertyChange(java.lang.String, int, int)

protected void firePropertyChange(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                                  int oldValue,
                                  int newValue)
Support for reporting bound property changes for integer properties. This method can be called when a bound property has changed and it will send the appropriate PropertyChangeEvent to any registered PropertyChangeListeners.

Parameters:
propertyName - the property whose value has changed
oldValue - the property's previous value
newValue - the property's new value

firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, byte, byte) definition code for java.awt.Component.firePropertyChange(java.lang.String, byte, byte)

public void firePropertyChange(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                               byte oldValue,
                               byte newValue)
Reports a bound property change.

Parameters:
propertyName - the programmatic name of the property that was changed
oldValue - the old value of the property (as a byte)
newValue - the new value of the property (as a byte)
Since:
1.5
See Also:
firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) sample code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) definition code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, char, char) definition code for java.awt.Component.firePropertyChange(java.lang.String, char, char)

public void firePropertyChange(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                               char oldValue,
                               char newValue)
Reports a bound property change.

Parameters:
propertyName - the programmatic name of the property that was changed
oldValue - the old value of the property (as a char)
newValue - the new value of the property (as a char)
Since:
1.5
See Also:
firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) sample code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) definition code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

firePropertyChange sample code for java.awt.Component.firePropertyChange(java.lang.String, short, short) definition code for java.awt.Component.firePropertyChange(java.lang.String, short, short)

public void firePropertyChange(String sample code for java.lang.String definition code for java.lang.String  propertyName,
                               short oldValue,
                               short newValue)
Reports a bound property change.

Parameters:
propertyName - the programmatic name of the property that was changed
oldValue - the old value of the property (as a short)
newValue - the old value of the property (as a short)
Since:
1.5
See Also:
firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object) sample code for java.awt.Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)