java.awt
Class Choice

java.lang.Object   
  java.awt.Component   
      java.awt.Choice

All Implemented Interfaces:

ImageObserver , ItemSelectable , MenuContainer , Serializable , Accessible

public class Choice
extends Component   
implements ItemSelectable   , Accessible   

The Choice class presents a pop-up menu of choices. The current choice is displayed as the title of the menu.

The following code example produces a pop-up menu:

 Choice ColorChooser = new Choice();
 ColorChooser.add("Green");
 ColorChooser.add("Red");
 ColorChooser.add("Blue");
 

After this choice menu has been added to a panel, it appears as follows in its normal state:

In the picture, "Green" is the current choice. Pushing the mouse button down on the object causes a menu to appear with the current choice highlighted.

Some native platforms do not support arbitrary resizing of Choice components and the behavior of setSize()/getSize() is bound by such limitations. Native GUI Choice components' size are often bound by such attributes as font size and length of items contained within the Choice.

Since:

JDK1.0

See Also:

Serialized Form

Nested Class Summary

protected class

Choice.AccessibleAWTChoice This class implements accessibility support for the Choice class.

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent , Component.BltBufferStrategy , Component.FlipBufferStrategy

Field Summary

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT , CENTER_ALIGNMENT , LEFT_ALIGNMENT , RIGHT_ALIGNMENT , TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT , ALLBITS , ERROR , FRAMEBITS , HEIGHT , PROPERTIES , SOMEBITS , WIDTH

Constructor Summary

Choice ()
Creates a new choice menu.

Method Summary

void	add (String item) Adds an item to this Choice menu.
void	addItem (String item) Obsolete as of Java 2 platform v1.1.
void	addItemListener (ItemListener l) Adds the specified item listener to receive item events from this Choice menu.
void	addNotify () Creates the Choice's peer.
int	countItems () Deprecated. As of JDK version 1.1, replaced by getItemCount().
AccessibleContext	getAccessibleContext () Gets the AccessibleContext associated with this Choice.
String	getItem (int index) Gets the string at the specified index in this Choice menu.
int	getItemCount () Returns the number of items in this Choice menu.
ItemListener []	getItemListeners () Returns an array of all the item listeners registered on this choice.
<T extends EventListener > T[]	getListeners (Class <T> listenerType) Returns an array of all the objects currently registered as FooListeners upon this Choice.
int	getSelectedIndex () Returns the index of the currently selected item.
String	getSelectedItem () Gets a representation of the current choice as a string.
Object []	getSelectedObjects () Returns an array (length 1) containing the currently selected item.
void	insert (String item, int index) Inserts the item into this choice at the specified position.
protected String	paramString () Returns a string representing the state of this Choice menu.
protected void	processEvent (AWTEvent e) Processes events on this choice.
protected void	processItemEvent (ItemEvent e) Processes item events occurring on this Choice menu by dispatching them to any registered ItemListener objects.
void	remove (int position) Removes an item from the choice menu at the specified position.
void	remove (String item) Removes the first occurrence of item from the Choice menu.
void	removeAll () Removes all items from the choice menu.
void	removeItemListener (ItemListener l) Removes the specified item listener so that it no longer receives item events from this Choice menu.
void	select (int pos) Sets the selected item in this Choice menu to be the item at the specified position.
void	select (String str) Sets the selected item in this Choice menu to be the item whose name is equal to the specified string.

Methods inherited from class java.awt.Component

action , add , addComponentListener , addFocusListener , addHierarchyBoundsListener , addHierarchyListener , addInputMethodListener , addKeyListener , addMouseListener , addMouseMotionListener , addMouseWheelListener , addPropertyChangeListener , addPropertyChangeListener , applyComponentOrientation , areFocusTraversalKeysSet , bounds , checkImage , checkImage , coalesceEvents , contains , contains , createImage , createImage , createVolatileImage , createVolatileImage , deliverEvent , disable , disableEvents , dispatchEvent , doLayout , enable , enable , enableEvents , enableInputMethods , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , getAlignmentX , getAlignmentY , getBackground , getBounds , getBounds , getColorModel , getComponentAt , getComponentAt , getComponentListeners , getComponentOrientation , getCursor , getDropTarget , getFocusCycleRootAncestor , getFocusListeners , getFocusTraversalKeys , getFocusTraversalKeysEnabled , getFont , getFontMetrics , getForeground , getGraphics , getGraphicsConfiguration , getHeight , getHierarchyBoundsListeners , getHierarchyListeners , getIgnoreRepaint , getInputContext , getInputMethodListeners , getInputMethodRequests , getKeyListeners , getLocale , getLocation , getLocation , getLocationOnScreen , getMaximumSize , getMinimumSize , getMouseListeners , getMouseMotionListeners , getMousePosition , getMouseWheelListeners , getName , getParent , getPeer , getPreferredSize , getPropertyChangeListeners , getPropertyChangeListeners , getSize , getSize , getToolkit , getTreeLock , getWidth , getX , getY , gotFocus