META-INF.modules.java.desktop.classes.java.awt.event.ComponentAdapter Maven / Gradle / Ivy
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package java.awt.event;
/**
* 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 {@code ComponentEvent} listener
* and override the methods for the events of interest. (If you implement the
* {@code 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 {@code addComponentListener}
* method. When the component's size, location, or visibility
* changes, the relevant method in the listener object is invoked,
* and the {@code ComponentEvent} is passed to it.
*
* @see ComponentEvent
* @see ComponentListener
* @see Tutorial: Writing a Component Listener
*
* @author Carl Quinn
* @since 1.1
*/
public abstract class ComponentAdapter implements ComponentListener {
/**
* Constructs a {@code ComponentAdapter}.
*/
protected ComponentAdapter() {}
/**
* Invoked when the component's size changes.
*/
public void componentResized(ComponentEvent e) {}
/**
* Invoked when the component's position changes.
*/
public void componentMoved(ComponentEvent e) {}
/**
* Invoked when the component has been made visible.
*/
public void componentShown(ComponentEvent e) {}
/**
* Invoked when the component has been made invisible.
*/
public void componentHidden(ComponentEvent e) {}
}