java.awt
Class Checkbox

java.lang.Object sample code for java.lang.Object definition code for java.lang.Object 
  extended by java.awt.Component sample code for java.awt.Component definition code for java.awt.Component 
      extended by java.awt.Checkbox
All Implemented Interfaces:
ImageObserver sample code for java.awt.image.ImageObserver definition code for java.awt.image.ImageObserver , ItemSelectable sample code for java.awt.ItemSelectable definition code for java.awt.ItemSelectable , 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 , Accessible sample code for javax.accessibility.Accessible definition code for javax.accessibility.Accessible

public class Checkbox
extends Component sample code for java.awt.Component definition code for java.awt.Component
implements ItemSelectable sample code for java.awt.ItemSelectable definition code for java.awt.ItemSelectable , Accessible sample code for javax.accessibility.Accessible definition code for javax.accessibility.Accessible

A check box is a graphical component that can be in either an "on" (true) or "off" (false) state. Clicking on a check box changes its state from "on" to "off," or from "off" to "on."

The following code example creates a set of check boxes in a grid layout:


 setLayout(new GridLayout(3, 1));
 add(new Checkbox("one", null, true));
 add(new Checkbox("two"));
 add(new Checkbox("three"));
 

This image depicts the check boxes and grid layout created by this code example:

The following context describes the graphic.

The button labeled one is in the "on" state, and the other two are in the "off" state. In this example, which uses the GridLayout class, the states of the three check boxes are set independently.

Alternatively, several check boxes can be grouped together under the control of a single object, using the CheckboxGroup class. In a check box group, at most one button can be in the "on" state at any given time. Clicking on a check box to turn it on forces any other check box in the same group that is on into the "off" state.

Since:
JDK1.0
See Also:
GridLayout sample code for java.awt.GridLayout definition code for java.awt.GridLayout , CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup , Serialized Form

Nested Class Summary
protected  class Checkbox.AccessibleAWTCheckbox sample code for java.awt.Checkbox.AccessibleAWTCheckbox definition code for java.awt.Checkbox.AccessibleAWTCheckbox
          This class implements accessibility support for the Checkbox class.
 
Nested classes/interfaces inherited from class java.awt.Component sample code for java.awt.Component definition code for java.awt.Component
Component.AccessibleAWTComponent sample code for java.awt.Component.AccessibleAWTComponent definition code for java.awt.Component.AccessibleAWTComponent , Component.BltBufferStrategy sample code for java.awt.Component.BltBufferStrategy definition code for java.awt.Component.BltBufferStrategy , Component.FlipBufferStrategy sample code for java.awt.Component.FlipBufferStrategy definition code for java.awt.Component.FlipBufferStrategy
 
Field Summary
 
Fields inherited from class java.awt.Component sample code for java.awt.Component definition code for java.awt.Component
BOTTOM_ALIGNMENT sample code for java.awt.Component.BOTTOM_ALIGNMENT definition code for java.awt.Component.BOTTOM_ALIGNMENT , CENTER_ALIGNMENT sample code for java.awt.Component.CENTER_ALIGNMENT definition code for java.awt.Component.CENTER_ALIGNMENT , LEFT_ALIGNMENT sample code for java.awt.Component.LEFT_ALIGNMENT definition code for java.awt.Component.LEFT_ALIGNMENT , RIGHT_ALIGNMENT sample code for java.awt.Component.RIGHT_ALIGNMENT definition code for java.awt.Component.RIGHT_ALIGNMENT , TOP_ALIGNMENT sample code for java.awt.Component.TOP_ALIGNMENT definition code for java.awt.Component.TOP_ALIGNMENT
 
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
Checkbox sample code for java.awt.Checkbox.Checkbox() definition code for java.awt.Checkbox.Checkbox() ()
          Creates a check box with an empty string for its label.
Checkbox sample code for java.awt.Checkbox.Checkbox(java.lang.String) definition code for java.awt.Checkbox.Checkbox(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  label)
          Creates a check box with the specified label.
Checkbox sample code for java.awt.Checkbox.Checkbox(java.lang.String, boolean) definition code for java.awt.Checkbox.Checkbox(java.lang.String, boolean) (String sample code for java.lang.String definition code for java.lang.String  label, boolean state)
          Creates a check box with the specified label and sets the specified state.
Checkbox sample code for java.awt.Checkbox.Checkbox(java.lang.String, boolean, java.awt.CheckboxGroup) definition code for java.awt.Checkbox.Checkbox(java.lang.String, boolean, java.awt.CheckboxGroup) (String sample code for java.lang.String definition code for java.lang.String  label, boolean state, CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup  group)
          Constructs a Checkbox with the specified label, set to the specified state, and in the specified check box group.
Checkbox sample code for java.awt.Checkbox.Checkbox(java.lang.String, java.awt.CheckboxGroup, boolean) definition code for java.awt.Checkbox.Checkbox(java.lang.String, java.awt.CheckboxGroup, boolean) (String sample code for java.lang.String definition code for java.lang.String  label, CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup  group, boolean state)
          Creates a check box with the specified label, in the specified check box group, and set to the specified state.
 
Method Summary
 void addItemListener sample code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) (ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener  l)
          Adds the specified item listener to receive item events from this check box.
 void addNotify sample code for java.awt.Checkbox.addNotify() definition code for java.awt.Checkbox.addNotify() ()
          Creates the peer of the Checkbox.
 AccessibleContext sample code for javax.accessibility.AccessibleContext definition code for javax.accessibility.AccessibleContext getAccessibleContext sample code for java.awt.Checkbox.getAccessibleContext() definition code for java.awt.Checkbox.getAccessibleContext() ()
          Gets the AccessibleContext associated with this Checkbox.
 CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup getCheckboxGroup sample code for java.awt.Checkbox.getCheckboxGroup() definition code for java.awt.Checkbox.getCheckboxGroup() ()
          Determines this check box's group.
 ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener [] getItemListeners sample code for java.awt.Checkbox.getItemListeners() definition code for java.awt.Checkbox.getItemListeners() ()
          Returns an array of all the item listeners registered on this checkbox.
 String sample code for java.lang.String definition code for java.lang.String getLabel sample code for java.awt.Checkbox.getLabel() definition code for java.awt.Checkbox.getLabel() ()
          Gets the label of this check box.
<T extends EventListener sample code for java.util.EventListener definition code for java.util.EventListener >
T[]
getListeners sample code for java.awt.Checkbox.getListeners(java.lang.Class) definition code for java.awt.Checkbox.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 Checkbox.
 Object sample code for java.lang.Object definition code for java.lang.Object [] getSelectedObjects sample code for java.awt.Checkbox.getSelectedObjects() definition code for java.awt.Checkbox.getSelectedObjects() ()
          Returns an array (length 1) containing the checkbox label or null if the checkbox is not selected.
 boolean getState sample code for java.awt.Checkbox.getState() definition code for java.awt.Checkbox.getState() ()
          Determines whether this check box is in the "on" or "off" state.
protected  String sample code for java.lang.String definition code for java.lang.String paramString sample code for java.awt.Checkbox.paramString() definition code for java.awt.Checkbox.paramString() ()
          Returns a string representing the state of this Checkbox.
protected  void processEvent sample code for java.awt.Checkbox.processEvent(java.awt.AWTEvent) definition code for java.awt.Checkbox.processEvent(java.awt.AWTEvent) (AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  e)
          Processes events on this check box.
protected  void processItemEvent sample code for java.awt.Checkbox.processItemEvent(java.awt.event.ItemEvent) definition code for java.awt.Checkbox.processItemEvent(java.awt.event.ItemEvent) (ItemEvent sample code for java.awt.event.ItemEvent definition code for java.awt.event.ItemEvent  e)
          Processes item events occurring on this check box by dispatching them to any registered ItemListener objects.
 void removeItemListener sample code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener) (ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener  l)
          Removes the specified item listener so that the item listener no longer receives item events from this check box.
 void setCheckboxGroup sample code for java.awt.Checkbox.setCheckboxGroup(java.awt.CheckboxGroup) definition code for java.awt.Checkbox.setCheckboxGroup(java.awt.CheckboxGroup) (CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup  g)
          Sets this check box's group to the specified check box group.
 void setLabel sample code for java.awt.Checkbox.setLabel(java.lang.String) definition code for java.awt.Checkbox.setLabel(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  label)
          Sets this check box's label to be the string argument.
 void setState sample code for java.awt.Checkbox.setState(boolean) definition code for java.awt.Checkbox.setState(boolean) (boolean state)
          Sets the state of this check box to the specified state.
 
Methods inherited from class java.awt.Component sample code for java.awt.Component definition code for java.awt.Component
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) , add sample code for java.awt.Component.add(java.awt.PopupMenu) definition code for java.awt.Component.add(java.awt.PopupMenu) , addComponentListener sample code for java.awt.Component.addComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.addComponentListener(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) , addHierarchyBoundsListener sample code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.addHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) , addHierarchyListener sample code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.addHierarchyListener(java.awt.event.HierarchyListener) , addInputMethodListener sample code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.addInputMethodListener(java.awt.event.InputMethodListener) , addKeyListener sample code for java.awt.Component.addKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.addKeyListener(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) , addMouseMotionListener sample code for java.awt.Component.addMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.addMouseMotionListener(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) , addPropertyChangeListener sample code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.addPropertyChangeListener(java.beans.PropertyChangeListener) , 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) , applyComponentOrientation sample code for java.awt.Component.applyComponentOrientation(java.awt.ComponentOrientation) definition code for java.awt.Component.applyComponentOrientation(java.awt.ComponentOrientation) , areFocusTraversalKeysSet sample code for java.awt.Component.areFocusTraversalKeysSet(int) definition code for java.awt.Component.areFocusTraversalKeysSet(int) , bounds sample code for java.awt.Component.bounds() definition code for java.awt.Component.bounds() , 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) , 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) , 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) , contains sample code for java.awt.Component.contains(int, int) definition code for java.awt.Component.contains(int, int) , contains sample code for java.awt.Component.contains(java.awt.Point) definition code for java.awt.Component.contains(java.awt.Point) , createImage sample code for java.awt.Component.createImage(java.awt.image.ImageProducer) definition code for java.awt.Component.createImage(java.awt.image.ImageProducer) , createImage sample code for java.awt.Component.createImage(int, int) definition code for java.awt.Component.createImage(int, int) , createVolatileImage sample code for java.awt.Component.createVolatileImage(int, int) definition code for java.awt.Component.createVolatileImage(int, int) , 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) , deliverEvent sample code for java.awt.Component.deliverEvent(java.awt.Event) definition code for java.awt.Component.deliverEvent(java.awt.Event) , disable sample code for java.awt.Component.disable() definition code for java.awt.Component.disable() , disableEvents sample code for java.awt.Component.disableEvents(long) definition code for java.awt.Component.disableEvents(long) , dispatchEvent sample code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) definition code for java.awt.Component.dispatchEvent(java.awt.AWTEvent) , doLayout sample code for java.awt.Component.doLayout() definition code for java.awt.Component.doLayout() , enable sample code for java.awt.Component.enable() definition code for java.awt.Component.enable() , enable sample code for java.awt.Component.enable(boolean) definition code for java.awt.Component.enable(boolean) , enableEvents sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long) , enableInputMethods sample code for java.awt.Component.enableInputMethods(boolean) definition code for java.awt.Component.enableInputMethods(boolean) , 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) , 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) , 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) , 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) , 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) , 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) , 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) , 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) , 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) , 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() , getBackground sample code for java.awt.Component.getBackground() definition code for java.awt.Component.getBackground() , getBounds sample code for java.awt.Component.getBounds() definition code for java.awt.Component.getBounds() , getBounds sample code for java.awt.Component.getBounds(java.awt.Rectangle) definition code for java.awt.Component.getBounds(java.awt.Rectangle) , getColorModel sample code for java.awt.Component.getColorModel() definition code for java.awt.Component.getColorModel() , getComponentAt sample code for java.awt.Component.getComponentAt(int, int) definition code for java.awt.Component.getComponentAt(int, int) , getComponentAt sample code for java.awt.Component.getComponentAt(java.awt.Point) definition code for java.awt.Component.getComponentAt(java.awt.Point) , getComponentListeners sample code for java.awt.Component.getComponentListeners() definition code for java.awt.Component.getComponentListeners() , getComponentOrientation sample code for java.awt.Component.getComponentOrientation() definition code for java.awt.Component.getComponentOrientation() , getCursor sample code for java.awt.Component.getCursor() definition code for java.awt.Component.getCursor() , getDropTarget sample code for java.awt.Component.getDropTarget() definition code for java.awt.Component.getDropTarget() , getFocusCycleRootAncestor sample code for java.awt.Component.getFocusCycleRootAncestor() definition code for java.awt.Component.getFocusCycleRootAncestor() , getFocusListeners sample code for java.awt.Component.getFocusListeners() definition code for java.awt.Component.getFocusListeners() , getFocusTraversalKeys 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() , getFont sample code for java.awt.Component.getFont() definition code for java.awt.Component.getFont() , getFontMetrics sample code for java.awt.Component.getFontMetrics(java.awt.Font) definition code for java.awt.Component.getFontMetrics(java.awt.Font) , getForeground sample code for java.awt.Component.getForeground() definition code for java.awt.Component.getForeground() , getGraphics sample code for java.awt.Component.getGraphics() definition code for java.awt.Component.getGraphics() , getGraphicsConfiguration sample code for java.awt.Component.getGraphicsConfiguration() definition code for java.awt.Component.getGraphicsConfiguration() , getHeight sample code for java.awt.Component.getHeight() definition code for java.awt.Component.getHeight() , getHierarchyBoundsListeners sample code for java.awt.Component.getHierarchyBoundsListeners() definition code for java.awt.Component.getHierarchyBoundsListeners() , getHierarchyListeners sample code for java.awt.Component.getHierarchyListeners() definition code for java.awt.Component.getHierarchyListeners() , getIgnoreRepaint sample code for java.awt.Component.getIgnoreRepaint() definition code for java.awt.Component.getIgnoreRepaint() , getInputContext sample code for java.awt.Component.getInputContext() definition code for java.awt.Component.getInputContext() , 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() , getKeyListeners sample code for java.awt.Component.getKeyListeners() definition code for java.awt.Component.getKeyListeners() , getLocale sample code for java.awt.Component.getLocale() definition code for java.awt.Component.getLocale() , getLocation sample code for java.awt.Component.getLocation() definition code for java.awt.Component.getLocation() , getLocation sample code for java.awt.Component.getLocation(java.awt.Point) definition code for java.awt.Component.getLocation(java.awt.Point) , getLocationOnScreen sample code for java.awt.Component.getLocationOnScreen() definition code for java.awt.Component.getLocationOnScreen() , getMaximumSize sample code for java.awt.Component.getMaximumSize() definition code for java.awt.Component.getMaximumSize() , getMinimumSize sample code for java.awt.Component.getMinimumSize() definition code for java.awt.Component.getMinimumSize() , 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() , getMousePosition sample code for java.awt.Component.getMousePosition() definition code for java.awt.Component.getMousePosition() , getMouseWheelListeners sample code for java.awt.Component.getMouseWheelListeners() definition code for java.awt.Component.getMouseWheelListeners() , 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() , getPeer sample code for java.awt.Component.getPeer() definition code for java.awt.Component.getPeer() , getPreferredSize sample code for java.awt.Component.getPreferredSize() definition code for java.awt.Component.getPreferredSize() , getPropertyChangeListeners sample code for java.awt.Component.getPropertyChangeListeners() definition code for java.awt.Component.getPropertyChangeListeners() , getPropertyChangeListeners sample code for java.awt.Component.getPropertyChangeListeners(java.lang.String) definition code for java.awt.Component.getPropertyChangeListeners(java.lang.String) , getSize sample code for java.awt.Component.getSize() definition code for java.awt.Component.getSize() , getSize sample code for java.awt.Component.getSize(java.awt.Dimension) definition code for java.awt.Component.getSize(java.awt.Dimension) , getToolkit sample code for java.awt.Component.getToolkit() definition code for java.awt.Component.getToolkit() , getTreeLock sample code for java.awt.Component.getTreeLock() definition code for java.awt.Component.getTreeLock() , getWidth sample code for java.awt.Component.getWidth() definition code for java.awt.Component.getWidth() , getX sample code for java.awt.Component.getX() definition code for java.awt.Component.getX() , getY sample code for java.awt.Component.getY() definition code for java.awt.Component.getY() , 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) , handleEvent sample code for java.awt.Component.handleEvent(java.awt.Event) definition code for java.awt.Component.handleEvent(java.awt.Event) , hasFocus sample code for java.awt.Component.hasFocus() definition code for java.awt.Component.hasFocus() , hide sample code for java.awt.Component.hide() definition code for java.awt.Component.hide() , 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) , inside sample code for java.awt.Component.inside(int, int) definition code for java.awt.Component.inside(int, int) , invalidate sample code for java.awt.Component.invalidate() definition code for java.awt.Component.invalidate() , isBackgroundSet sample code for java.awt.Component.isBackgroundSet() definition code for java.awt.Component.isBackgroundSet() , isCursorSet sample code for java.awt.Component.isCursorSet() definition code for java.awt.Component.isCursorSet() , isDisplayable sample code for java.awt.Component.isDisplayable() definition code for java.awt.Component.isDisplayable() , isDoubleBuffered sample code for java.awt.Component.isDoubleBuffered() definition code for java.awt.Component.isDoubleBuffered() , isEnabled sample code for java.awt.Component.isEnabled() definition code for java.awt.Component.isEnabled() , isFocusable sample code for java.awt.Component.isFocusable() definition code for java.awt.Component.isFocusable() , isFocusCycleRoot sample code for java.awt.Component.isFocusCycleRoot(java.awt.Container) definition code for java.awt.Component.isFocusCycleRoot(java.awt.Container) , isFocusOwner sample code for java.awt.Component.isFocusOwner() definition code for java.awt.Component.isFocusOwner() , isFocusTraversable sample code for java.awt.Component.isFocusTraversable() definition code for java.awt.Component.isFocusTraversable() , isFontSet sample code for java.awt.Component.isFontSet() definition code for java.awt.Component.isFontSet() , isForegroundSet sample code for java.awt.Component.isForegroundSet() definition code for java.awt.Component.isForegroundSet() , isLightweight sample code for java.awt.Component.isLightweight() definition code for java.awt.Component.isLightweight() , isMaximumSizeSet sample code for java.awt.Component.isMaximumSizeSet() definition code for java.awt.Component.isMaximumSizeSet() , isMinimumSizeSet sample code for java.awt.Component.isMinimumSizeSet() definition code for java.awt.Component.isMinimumSizeSet() , isOpaque sample code for java.awt.Component.isOpaque() definition code for java.awt.Component.isOpaque() , isPreferredSizeSet sample code for java.awt.Component.isPreferredSizeSet() definition code for java.awt.Component.isPreferredSizeSet() , isShowing sample code for java.awt.Component.isShowing() definition code for java.awt.Component.isShowing() , isValid sample code for java.awt.Component.isValid() definition code for java.awt.Component.isValid() , isVisible sample code for java.awt.Component.isVisible() definition code for java.awt.Component.isVisible() , keyDown sample code for java.awt.Component.keyDown(java.awt.Event, int) definition code for java.awt.Component.keyDown(java.awt.Event, int) , keyUp sample code for java.awt.Component.keyUp(java.awt.Event, int) definition code for java.awt.Component.keyUp(java.awt.Event, int) , layout sample code for java.awt.Component.layout() definition code for java.awt.Component.layout() , list sample code for java.awt.Component.list() definition code for java.awt.Component.list() , list sample code for java.awt.Component.list(java.io.PrintStream) definition code for java.awt.Component.list(java.io.PrintStream) , list sample code for java.awt.Component.list(java.io.PrintStream, int) definition code for java.awt.Component.list(java.io.PrintStream, int) , list sample code for java.awt.Component.list(java.io.PrintWriter) definition code for java.awt.Component.list(java.io.PrintWriter) , list sample code for java.awt.Component.list(java.io.PrintWriter, int) definition code for java.awt.Component.list(java.io.PrintWriter, int) , locate sample code for java.awt.Component.locate(int, int) definition code for java.awt.Component.locate(int, int) , location sample code for java.awt.Component.location() definition code for java.awt.Component.location() , 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) , minimumSize sample code for java.awt.Component.minimumSize() definition code for java.awt.Component.minimumSize() , 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) , 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) , 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) , 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) , 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) , 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) , move sample code for java.awt.Component.move(int, int) definition code for java.awt.Component.move(int, int) , nextFocus sample code for java.awt.Component.nextFocus() definition code for java.awt.Component.nextFocus() , paint sample code for java.awt.Component.paint(java.awt.Graphics) definition code for java.awt.Component.paint(java.awt.Graphics) , paintAll sample code for java.awt.Component.paintAll(java.awt.Graphics) definition code for java.awt.Component.paintAll(java.awt.Graphics) , postEvent sample code for java.awt.Component.postEvent(java.awt.Event) definition code for java.awt.Component.postEvent(java.awt.Event) , preferredSize sample code for java.awt.Component.preferredSize() definition code for java.awt.Component.preferredSize() , 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) , 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) , print sample code for java.awt.Component.print(java.awt.Graphics) definition code for java.awt.Component.print(java.awt.Graphics) , printAll sample code for java.awt.Component.printAll(java.awt.Graphics) definition code for java.awt.Component.printAll(java.awt.Graphics) , processComponentEvent sample code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent) definition code for java.awt.Component.processComponentEvent(java.awt.event.ComponentEvent) , processFocusEvent sample code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent) definition code for java.awt.Component.processFocusEvent(java.awt.event.FocusEvent) , processHierarchyBoundsEvent sample code for java.awt.Component.processHierarchyBoundsEvent(java.awt.event.HierarchyEvent) definition code for java.awt.Component.processHierarchyBoundsEvent(java.awt.event.HierarchyEvent) , processHierarchyEvent sample code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent) definition code for java.awt.Component.processHierarchyEvent(java.awt.event.HierarchyEvent) , processInputMethodEvent sample code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent) definition code for java.awt.Component.processInputMethodEvent(java.awt.event.InputMethodEvent) , processKeyEvent sample code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) definition code for java.awt.Component.processKeyEvent(java.awt.event.KeyEvent) , processMouseEvent sample code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) , processMouseMotionEvent sample code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent) definition code for java.awt.Component.processMouseMotionEvent(java.awt.event.MouseEvent) , processMouseWheelEvent sample code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent) definition code for java.awt.Component.processMouseWheelEvent(java.awt.event.MouseWheelEvent) , remove sample code for java.awt.Component.remove(java.awt.MenuComponent) definition code for java.awt.Component.remove(java.awt.MenuComponent) , removeComponentListener sample code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) definition code for java.awt.Component.removeComponentListener(java.awt.event.ComponentListener) , removeFocusListener sample code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) definition code for java.awt.Component.removeFocusListener(java.awt.event.FocusListener) , removeHierarchyBoundsListener sample code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) definition code for java.awt.Component.removeHierarchyBoundsListener(java.awt.event.HierarchyBoundsListener) , removeHierarchyListener sample code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) definition code for java.awt.Component.removeHierarchyListener(java.awt.event.HierarchyListener) , removeInputMethodListener sample code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) definition code for java.awt.Component.removeInputMethodListener(java.awt.event.InputMethodListener) , removeKeyListener sample code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) definition code for java.awt.Component.removeKeyListener(java.awt.event.KeyListener) , removeMouseListener sample code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) definition code for java.awt.Component.removeMouseListener(java.awt.event.MouseListener) , removeMouseMotionListener sample code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) definition code for java.awt.Component.removeMouseMotionListener(java.awt.event.MouseMotionListener) , removeMouseWheelListener sample code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) definition code for java.awt.Component.removeMouseWheelListener(java.awt.event.MouseWheelListener) , removeNotify sample code for java.awt.Component.removeNotify() definition code for java.awt.Component.removeNotify() , removePropertyChangeListener sample code for java.awt.Component.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for java.awt.Component.removePropertyChangeListener(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) , repaint sample code for java.awt.Component.repaint() definition code for java.awt.Component.repaint() , repaint sample code for java.awt.Component.repaint(int, int, int, int) definition code for java.awt.Component.repaint(int, int, int, int) , repaint sample code for java.awt.Component.repaint(long) definition code for java.awt.Component.repaint(long) , 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) , requestFocus sample code for java.awt.Component.requestFocus() definition code for java.awt.Component.requestFocus() , requestFocus sample code for java.awt.Component.requestFocus(boolean) definition code for java.awt.Component.requestFocus(boolean) , requestFocusInWindow sample code for java.awt.Component.requestFocusInWindow() definition code for java.awt.Component.requestFocusInWindow() , requestFocusInWindow sample code for java.awt.Component.requestFocusInWindow(boolean) definition code for java.awt.Component.requestFocusInWindow(boolean) , reshape sample code for java.awt.Component.reshape(int, int, int, int) definition code for java.awt.Component.reshape(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) , resize sample code for java.awt.Component.resize(int, int) definition code for java.awt.Component.resize(int, int) , setBackground sample code for java.awt.Component.setBackground(java.awt.Color) definition code for java.awt.Component.setBackground(java.awt.Color) , setBounds sample code for java.awt.Component.setBounds(int, int, int, int) definition code for java.awt.Component.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) , setComponentOrientation sample code for java.awt.Component.setComponentOrientation(java.awt.ComponentOrientation) definition code for java.awt.Component.setComponentOrientation(java.awt.ComponentOrientation) , setCursor sample code for java.awt.Component.setCursor(java.awt.Cursor) definition code for java.awt.Component.setCursor(java.awt.Cursor) , setDropTarget sample code for java.awt.Component.setDropTarget(java.awt.dnd.DropTarget) definition code for java.awt.Component.setDropTarget(java.awt.dnd.DropTarget) , setEnabled sample code for java.awt.Component.setEnabled(boolean) definition code for java.awt.Component.setEnabled(boolean) , setFocusable sample code for java.awt.Component.setFocusable(boolean) definition code for java.awt.Component.setFocusable(boolean) , setFocusTraversalKeys sample code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) definition code for java.awt.Component.setFocusTraversalKeys(int, java.util.Set) , setFocusTraversalKeysEnabled sample code for java.awt.Component.setFocusTraversalKeysEnabled(boolean) definition code for java.awt.Component.setFocusTraversalKeysEnabled(boolean) , setFont sample code for java.awt.Component.setFont(java.awt.Font) definition code for java.awt.Component.setFont(java.awt.Font) , setForeground sample code for java.awt.Component.setForeground(java.awt.Color) definition code for java.awt.Component.setForeground(java.awt.Color) , setIgnoreRepaint sample code for java.awt.Component.setIgnoreRepaint(boolean) definition code for java.awt.Component.setIgnoreRepaint(boolean) , setLocale sample code for java.awt.Component.setLocale(java.util.Locale) definition code for java.awt.Component.setLocale(java.util.Locale) , setLocation sample code for java.awt.Component.setLocation(int, int) definition code for java.awt.Component.setLocation(int, int) , setLocation sample code for java.awt.Component.setLocation(java.awt.Point) definition code for java.awt.Component.setLocation(java.awt.Point) , setMaximumSize sample code for java.awt.Component.setMaximumSize(java.awt.Dimension) definition code for java.awt.Component.setMaximumSize(java.awt.Dimension) , setMinimumSize sample code for java.awt.Component.setMinimumSize(java.awt.Dimension) definition code for java.awt.Component.setMinimumSize(java.awt.Dimension) , setName sample code for java.awt.Component.setName(java.lang.String) definition code for java.awt.Component.setName(java.lang.String) , setPreferredSize sample code for java.awt.Component.setPreferredSize(java.awt.Dimension) definition code for java.awt.Component.setPreferredSize(java.awt.Dimension) , setSize sample code for java.awt.Component.setSize(java.awt.Dimension) definition code for java.awt.Component.setSize(java.awt.Dimension) , setSize sample code for java.awt.Component.setSize(int, int) definition code for java.awt.Component.setSize(int, int) , setVisible sample code for java.awt.Component.setVisible(boolean) definition code for java.awt.Component.setVisible(boolean) , show sample code for java.awt.Component.show() definition code for java.awt.Component.show() , show sample code for java.awt.Component.show(boolean) definition code for java.awt.Component.show(boolean) , size sample code for java.awt.Component.size() definition code for java.awt.Component.size() , toString sample code for java.awt.Component.toString() definition code for java.awt.Component.toString() , transferFocus sample code for java.awt.Component.transferFocus() definition code for java.awt.Component.transferFocus() , transferFocusBackward sample code for java.awt.Component.transferFocusBackward() definition code for java.awt.Component.transferFocusBackward() , transferFocusUpCycle sample code for java.awt.Component.transferFocusUpCycle() definition code for java.awt.Component.transferFocusUpCycle() , update sample code for java.awt.Component.update(java.awt.Graphics) definition code for java.awt.Component.update(java.awt.Graphics) , validate sample code for java.awt.Component.validate() definition code for java.awt.Component.validate()
 
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)
 

Constructor Detail

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

public Checkbox()
         throws HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException 
Creates a check box with an empty string for its label. The state of this check box is set to "off," and it is not part of any check box group.

Throws:
HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException - if GraphicsEnvironment.isHeadless() returns true
See Also:
GraphicsEnvironment.isHeadless() sample code for java.awt.GraphicsEnvironment.isHeadless() definition code for java.awt.GraphicsEnvironment.isHeadless()

Checkbox sample code for java.awt.Checkbox(java.lang.String) definition code for java.awt.Checkbox(java.lang.String)

public Checkbox(String sample code for java.lang.String definition code for java.lang.String  label)
         throws HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException 
Creates a check box with the specified label. The state of this check box is set to "off," and it is not part of any check box group.

Parameters:
label - a string label for this check box, or null for no label.
Throws:
HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException - if GraphicsEnvironment.isHeadless returns true
See Also:
GraphicsEnvironment.isHeadless() sample code for java.awt.GraphicsEnvironment.isHeadless() definition code for java.awt.GraphicsEnvironment.isHeadless()

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

public Checkbox(String sample code for java.lang.String definition code for java.lang.String  label,
                boolean state)
         throws HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException 
Creates a check box with the specified label and sets the specified state. This check box is not part of any check box group.

Parameters:
label - a string label for this check box, or null for no label
state - the initial state of this check box
Throws:
HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException - if GraphicsEnvironment.isHeadless returns true
See Also:
GraphicsEnvironment.isHeadless() sample code for java.awt.GraphicsEnvironment.isHeadless() definition code for java.awt.GraphicsEnvironment.isHeadless()

Checkbox sample code for java.awt.Checkbox(java.lang.String, boolean, java.awt.CheckboxGroup) definition code for java.awt.Checkbox(java.lang.String, boolean, java.awt.CheckboxGroup)

public Checkbox(String sample code for java.lang.String definition code for java.lang.String  label,
                boolean state,
                CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup  group)
         throws HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException 
Constructs a Checkbox with the specified label, set to the specified state, and in the specified check box group.

Parameters:
label - a string label for this check box, or null for no label.
state - the initial state of this check box.
group - a check box group for this check box, or null for no group.
Throws:
HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException - if GraphicsEnvironment.isHeadless returns true
Since:
JDK1.1
See Also:
GraphicsEnvironment.isHeadless() sample code for java.awt.GraphicsEnvironment.isHeadless() definition code for java.awt.GraphicsEnvironment.isHeadless()

Checkbox sample code for java.awt.Checkbox(java.lang.String, java.awt.CheckboxGroup, boolean) definition code for java.awt.Checkbox(java.lang.String, java.awt.CheckboxGroup, boolean)

public Checkbox(String sample code for java.lang.String definition code for java.lang.String  label,
                CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup  group,
                boolean state)
         throws HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException 
Creates a check box with the specified label, in the specified check box group, and set to the specified state.

Parameters:
label - a string label for this check box, or null for no label.
group - a check box group for this check box, or null for no group.
state - the initial state of this check box.
Throws:
HeadlessException sample code for java.awt.HeadlessException definition code for java.awt.HeadlessException - if GraphicsEnvironment.isHeadless returns true
Since:
JDK1.1
See Also:
GraphicsEnvironment.isHeadless() sample code for java.awt.GraphicsEnvironment.isHeadless() definition code for java.awt.GraphicsEnvironment.isHeadless()
Method Detail

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

public void addNotify()
Creates the peer of the Checkbox. The peer allows you to change the look of the Checkbox without changing its functionality.

Overrides:
addNotify sample code for java.awt.Component.addNotify() definition code for java.awt.Component.addNotify() in class Component sample code for java.awt.Component definition code for java.awt.Component
See Also:
Toolkit.createCheckbox(java.awt.Checkbox) sample code for java.awt.Toolkit.createCheckbox(java.awt.Checkbox) definition code for java.awt.Toolkit.createCheckbox(java.awt.Checkbox) , Component.getToolkit() sample code for java.awt.Component.getToolkit() definition code for java.awt.Component.getToolkit()

getLabel sample code for java.awt.Checkbox.getLabel() definition code for java.awt.Checkbox.getLabel()

public String sample code for java.lang.String definition code for java.lang.String  getLabel()
Gets the label of this check box.

Returns:
the label of this check box, or null if this check box has no label.
See Also:
setLabel(String) sample code for java.awt.Checkbox.setLabel(java.lang.String) definition code for java.awt.Checkbox.setLabel(java.lang.String)

setLabel sample code for java.awt.Checkbox.setLabel(java.lang.String) definition code for java.awt.Checkbox.setLabel(java.lang.String)

public void setLabel(String sample code for java.lang.String definition code for java.lang.String  label)
Sets this check box's label to be the string argument.

Parameters:
label - a string to set as the new label, or null for no label.
See Also:
getLabel() sample code for java.awt.Checkbox.getLabel() definition code for java.awt.Checkbox.getLabel()

getState sample code for java.awt.Checkbox.getState() definition code for java.awt.Checkbox.getState()

public boolean getState()
Determines whether this check box is in the "on" or "off" state. The boolean value true indicates the "on" state, and false indicates the "off" state.

Returns:
the state of this check box, as a boolean value
See Also:
setState(boolean) sample code for java.awt.Checkbox.setState(boolean) definition code for java.awt.Checkbox.setState(boolean)

setState sample code for java.awt.Checkbox.setState(boolean) definition code for java.awt.Checkbox.setState(boolean)

public void setState(boolean state)
Sets the state of this check box to the specified state. The boolean value true indicates the "on" state, and false indicates the "off" state.

Note that this method should be primarily used to initialize the state of the checkbox. Programmatically setting the state of the checkbox will not trigger an ItemEvent. The only way to trigger an ItemEvent is by user interaction.

Parameters:
state - the boolean state of the check box
See Also:
getState() sample code for java.awt.Checkbox.getState() definition code for java.awt.Checkbox.getState()

getSelectedObjects sample code for java.awt.Checkbox.getSelectedObjects() definition code for java.awt.Checkbox.getSelectedObjects()

public Object sample code for java.lang.Object definition code for java.lang.Object [] getSelectedObjects()
Returns an array (length 1) containing the checkbox label or null if the checkbox is not selected.

Specified by:
getSelectedObjects sample code for java.awt.ItemSelectable.getSelectedObjects() definition code for java.awt.ItemSelectable.getSelectedObjects() in interface ItemSelectable sample code for java.awt.ItemSelectable definition code for java.awt.ItemSelectable
See Also:
ItemSelectable sample code for java.awt.ItemSelectable definition code for java.awt.ItemSelectable

getCheckboxGroup sample code for java.awt.Checkbox.getCheckboxGroup() definition code for java.awt.Checkbox.getCheckboxGroup()

public CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup  getCheckboxGroup()
Determines this check box's group.

Returns:
this check box's group, or null if the check box is not part of a check box group.
See Also:
setCheckboxGroup(CheckboxGroup) sample code for java.awt.Checkbox.setCheckboxGroup(java.awt.CheckboxGroup) definition code for java.awt.Checkbox.setCheckboxGroup(java.awt.CheckboxGroup)

setCheckboxGroup sample code for java.awt.Checkbox.setCheckboxGroup(java.awt.CheckboxGroup) definition code for java.awt.Checkbox.setCheckboxGroup(java.awt.CheckboxGroup)

public void setCheckboxGroup(CheckboxGroup sample code for java.awt.CheckboxGroup definition code for java.awt.CheckboxGroup  g)
Sets this check box's group to the specified check box group. If this check box is already in a different check box group, it is first taken out of that group.

If the state of this check box is true and the new group already has a check box selected, this check box's state is changed to false. If the state of this check box is true and the new group has no check box selected, this check box becomes the selected checkbox for the new group and its state is true.

Parameters:
g - the new check box group, or null to remove this check box from any check box group
See Also:
getCheckboxGroup() sample code for java.awt.Checkbox.getCheckboxGroup() definition code for java.awt.Checkbox.getCheckboxGroup()

addItemListener sample code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener)

public void addItemListener(ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener  l)
Adds the specified item listener to receive item events from this check box. Item events are sent to listeners in response to user input, but not in response to calls to setState(). If l is null, no exception is thrown and no action is performed.

Specified by:
addItemListener sample code for java.awt.ItemSelectable.addItemListener(java.awt.event.ItemListener) definition code for java.awt.ItemSelectable.addItemListener(java.awt.event.ItemListener) in interface ItemSelectable sample code for java.awt.ItemSelectable definition code for java.awt.ItemSelectable
Parameters:
l - the item listener
Since:
JDK1.1
See Also:
removeItemListener(java.awt.event.ItemListener) sample code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener) , getItemListeners() sample code for java.awt.Checkbox.getItemListeners() definition code for java.awt.Checkbox.getItemListeners() , setState(boolean) sample code for java.awt.Checkbox.setState(boolean) definition code for java.awt.Checkbox.setState(boolean) , ItemEvent sample code for java.awt.event.ItemEvent definition code for java.awt.event.ItemEvent , ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener

removeItemListener sample code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener)

public void removeItemListener(ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener  l)
Removes the specified item listener so that the item listener no longer receives item events from this check box. If l is null, no exception is thrown and no action is performed.

Specified by:
removeItemListener sample code for java.awt.ItemSelectable.removeItemListener(java.awt.event.ItemListener) definition code for java.awt.ItemSelectable.removeItemListener(java.awt.event.ItemListener) in interface ItemSelectable sample code for java.awt.ItemSelectable definition code for java.awt.ItemSelectable
Parameters:
l - the item listener
Since:
JDK1.1
See Also:
addItemListener(java.awt.event.ItemListener) sample code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) , getItemListeners() sample code for java.awt.Checkbox.getItemListeners() definition code for java.awt.Checkbox.getItemListeners() , ItemEvent sample code for java.awt.event.ItemEvent definition code for java.awt.event.ItemEvent , ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener

getItemListeners sample code for java.awt.Checkbox.getItemListeners() definition code for java.awt.Checkbox.getItemListeners()

public ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener [] getItemListeners()
Returns an array of all the item listeners registered on this checkbox.

Returns:
all of this checkbox's ItemListeners or an empty array if no item listeners are currently registered
Since:
1.4
See Also:
addItemListener(java.awt.event.ItemListener) sample code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) , removeItemListener(java.awt.event.ItemListener) sample code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.removeItemListener(java.awt.event.ItemListener) , ItemEvent sample code for java.awt.event.ItemEvent definition code for java.awt.event.ItemEvent , ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener

getListeners sample code for java.awt.Checkbox.<T extends java.util.EventListener>getListeners(java.lang.Class<T>) definition code for java.awt.Checkbox.<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 Checkbox. 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 Checkbox c for its item listeners with the following code:

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

Overrides:
getListeners sample code for java.awt.Component.getListeners(java.lang.Class) definition code for java.awt.Component.getListeners(java.lang.Class) in class Component sample code for java.awt.Component definition code for java.awt.Component
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 checkbox, 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:
getItemListeners() sample code for java.awt.Checkbox.getItemListeners() definition code for java.awt.Checkbox.getItemListeners()

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

protected void processEvent(AWTEvent sample code for java.awt.AWTEvent definition code for java.awt.AWTEvent  e)
Processes events on this check box. If the event is an instance of ItemEvent, this method invokes the processItemEvent method. Otherwise, it calls its superclass's processEvent method.

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

Overrides:
processEvent sample code for java.awt.Component.processEvent(java.awt.AWTEvent) definition code for java.awt.Component.processEvent(java.awt.AWTEvent) in class Component sample code for java.awt.Component definition code for java.awt.Component
Parameters:
e - the event
Since:
JDK1.1
See Also:
ItemEvent sample code for java.awt.event.ItemEvent definition code for java.awt.event.ItemEvent , processItemEvent(java.awt.event.ItemEvent) sample code for java.awt.Checkbox.processItemEvent(java.awt.event.ItemEvent) definition code for java.awt.Checkbox.processItemEvent(java.awt.event.ItemEvent)

processItemEvent sample code for java.awt.Checkbox.processItemEvent(java.awt.event.ItemEvent) definition code for java.awt.Checkbox.processItemEvent(java.awt.event.ItemEvent)

protected void processItemEvent(ItemEvent sample code for java.awt.event.ItemEvent definition code for java.awt.event.ItemEvent  e)
Processes item events occurring on this check box by dispatching them to any registered ItemListener objects.

This method is not called unless item events are enabled for this component. Item 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 item event
Since:
JDK1.1
See Also:
ItemEvent sample code for java.awt.event.ItemEvent definition code for java.awt.event.ItemEvent , ItemListener sample code for java.awt.event.ItemListener definition code for java.awt.event.ItemListener , addItemListener(java.awt.event.ItemListener) sample code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) definition code for java.awt.Checkbox.addItemListener(java.awt.event.ItemListener) , Component.enableEvents(long) sample code for java.awt.Component.enableEvents(long) definition code for java.awt.Component.enableEvents(long)

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

protected String sample code for java.lang.String definition code for java.lang.String  paramString()
Returns a string representing the state of this Checkbox. 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.

Overrides:
paramString sample code for java.awt.Component.paramString() definition code for java.awt.Component.paramString() in class Component sample code for java.awt.Component definition code for java.awt.Component
Returns:
the parameter string of this check box

getAccessibleContext sample code for java.awt.Checkbox.getAccessibleContext() definition code for java.awt.Checkbox.getAccessibleContext()

public AccessibleContext sample code for javax.accessibility.AccessibleContext definition code for javax.accessibility.AccessibleContext  getAccessibleContext()
Gets the AccessibleContext associated with this Checkbox. For checkboxes, the AccessibleContext takes the form of an AccessibleAWTCheckbox. A new AccessibleAWTCheckbox is created if necessary.

Specified by:
getAccessibleContext sample code for javax.accessibility.Accessible.getAccessibleContext() definition code for javax.accessibility.Accessible.getAccessibleContext() in interface Accessible sample code for javax.accessibility.Accessible definition code for javax.accessibility.Accessible
Overrides:
getAccessibleContext sample code for java.awt.Component.getAccessibleContext() definition code for java.awt.Component.getAccessibleContext() in class Component sample code for java.awt.Component definition code for java.awt.Component
Returns:
an AccessibleAWTCheckbox that serves as the AccessibleContext of this Checkbox