Class ComponentAdapter
- 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
ComponentEventlistener and override the methods for the events of interest. (If you implement theComponentListenerinterface, 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
addComponentListenermethod. When the component's size, location, or visibility changes, the relevant method in the listener object is invoked, and theComponentEventis passed to it.- Since:
- 1.1
- See Also:
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ComponentEvent,ComponentListener, Tutorial: Writing a Component Listener
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Constructor Summary
Constructors Constructor and Description ComponentAdapter()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description voidcomponentHidden(ComponentEvent e)Invoked when the component has been made invisible.voidcomponentMoved(ComponentEvent e)Invoked when the component's position changes.voidcomponentResized(ComponentEvent e)Invoked when the component's size changes.voidcomponentShown(ComponentEvent e)Invoked when the component has been made visible.
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Method Detail
componentResized
public void componentResized(ComponentEvent e)
Invoked when the component's size changes.- Specified by:
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componentResizedin interfaceComponentListener
componentMoved
public void componentMoved(ComponentEvent e)
Invoked when the component's position changes.- Specified by:
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componentMovedin interfaceComponentListener
componentShown
public void componentShown(ComponentEvent e)
Invoked when the component has been made visible.- Specified by:
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componentShownin interfaceComponentListener
componentHidden
public void componentHidden(ComponentEvent e)
Invoked when the component has been made invisible.- Specified by:
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componentHiddenin interfaceComponentListener
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