ComponentListener
, EventListener
BasicSliderUI.ComponentHandler
, BasicTreeUI.ComponentHandler
, JViewport.ViewListener
public abstract class ComponentAdapter extends Object implements ComponentListener
Extend this class to create a ComponentEvent
listener and override the methods for the events of interest. (If you implement the ComponentListener
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 the ComponentEvent
is passed to it.
Modifier | Constructor | Description |
---|---|---|
protected |
Constructs a ComponentAdapter . |
Modifier and Type | Method | Description |
---|---|---|
void |
componentHidden |
Invoked when the component has been made invisible. |
void |
componentMoved |
Invoked when the component's position changes. |
void |
componentResized |
Invoked when the component's size changes. |
void |
componentShown |
Invoked when the component has been made visible. |
protected ComponentAdapter()
ComponentAdapter
.public void componentResized(ComponentEvent e)
componentResized
in interface ComponentListener
e
- the event to be processedpublic void componentMoved(ComponentEvent e)
componentMoved
in interface ComponentListener
e
- the event to be processedpublic void componentShown(ComponentEvent e)
componentShown
in interface ComponentListener
e
- the event to be processedpublic void componentHidden(ComponentEvent e)
componentHidden
in interface ComponentListener
e
- the event to be processed
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/awt/event/ComponentAdapter.html