- java.lang.Object
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- java.awt.event.ComponentAdapter
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- All Implemented Interfaces:
- ComponentListener, EventListener
- Direct Known Subclasses:
- BasicSliderUI.ComponentHandler, BasicTreeUI.ComponentHandler, JViewport.ViewListener
public abstract class ComponentAdapter extends Object implements ComponentListener
An abstract adapter class for receiving component events. The methods in this class are empty. This class exists as convenience for creating listener objects.Extend this class to create a
ComponentEvent
listener and override the methods for the events of interest. (If you implement theComponentListener
interface, you have to define all of the methods in it. This abstract class defines null methods for them all, so you can only have to define methods for events you care about.)Create a listener object using your class and then register it with a component using the component's
addComponentListener
method. When the component's size, location, or visibility changes, the relevant method in the listener object is invoked, and theComponentEvent
is passed to it.- Since:
- 1.1
- See Also:
ComponentEvent
,ComponentListener
, Tutorial: Writing a Component Listener
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Constructor Summary
Constructors Constructor and Description ComponentAdapter()
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Method Summary
Methods Modifier and Type Method and Description void
componentHidden(ComponentEvent e)
Invoked when the component has been made invisible.void
componentMoved(ComponentEvent e)
Invoked when the component's position changes.void
componentResized(ComponentEvent e)
Invoked when the component's size changes.void
componentShown(ComponentEvent e)
Invoked when the component has been made visible.
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Method Detail
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componentResized
public void componentResized(ComponentEvent e)
Invoked when the component's size changes.- Specified by:
componentResized
in interfaceComponentListener
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componentMoved
public void componentMoved(ComponentEvent e)
Invoked when the component's position changes.- Specified by:
componentMoved
in interfaceComponentListener
-
componentShown
public void componentShown(ComponentEvent e)
Invoked when the component has been made visible.- Specified by:
componentShown
in interfaceComponentListener
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componentHidden
public void componentHidden(ComponentEvent e)
Invoked when the component has been made invisible.- Specified by:
componentHidden
in interfaceComponentListener
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Document created the 11/06/2005, last modified the 04/03/2020
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