java.awt.event.ContainerAdapter Maven / Gradle / Ivy
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*/
package java.awt.event;
/**
* An abstract adapter class for receiving container events.
* The methods in this class are empty. This class exists as
* convenience for creating listener objects.
*
* Extend this class to create a ContainerEvent listener
* and override the methods for the events of interest. (If you implement the
* ContainerListener 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 the extended class and then register it with
* a component using the component's addContainerListener
* method. When the container's contents change because a component has
* been added or removed, the relevant method in the listener object is invoked,
* and the ContainerEvent is passed to it.
*
* @see ContainerEvent
* @see ContainerListener
* @see Tutorial: Writing a Container Listener
* @see Reference: The Java Class Libraries (update file)
*
* @author Amy Fowler
* @version 1.11 01/23/03
* @since 1.1
*/
public abstract class ContainerAdapter implements ContainerListener
{
public ContainerAdapter() { }
/**
* Invoked when a component has been added to the container.
*/
public void componentAdded(ContainerEvent e) { }
/**
* Invoked when a component has been removed from the container.
*/
public void componentRemoved(ContainerEvent e) { }
}