/*
* Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.awt.event;
import java.util.EventListener;
/**
* The listener interface for receiving container events.
* The class that is interested in processing a container event
* either implements this interface (and all the methods it
* contains) or extends the abstract <code>ContainerAdapter</code> class
* (overriding only the methods of interest).
* The listener object created from that class is then registered with a
* component using the component's <code>addContainerListener</code>
* 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 <code>ContainerEvent</code> is passed to it.
* <P>
* Container events are provided for notification purposes ONLY;
* The AWT will automatically handle add and remove operations
* internally so the program works properly regardless of
* whether the program registers a <code>ComponentListener</code> or not.
*
* @see ContainerAdapter
* @see ContainerEvent
* @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/containerlistener.html">Tutorial: Writing a Container Listener</a>
*
* @author Tim Prinzing
* @author Amy Fowler
* @since 1.1
*/
public interface ContainerListener extends EventListener {
/**
* 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);
}