1. /*

  2.  * @(#)NodeChangeListener.java	1.4 03/12/19

  3.  *

  4.  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package java.util.prefs;

  9. 

  10. /**

  11.  * A listener for receiving preference node change events.

  12.  *

  13.  * @author  Josh Bloch

  14.  * @version 1.4, 12/19/03

  15.  * @see     Preferences

  16.  * @see     NodeChangeEvent

  17.  * @see     PreferenceChangeListener

  18.  * @since   1.4

  19.  */

  20. 

  21. public interface NodeChangeListener extends java.util.EventListener {

  22.     /**

  23.      * This method gets called when a child node is added.

  24.      *

  25.      * @param evt A node change event object describing the parent

  26.      *            and child node.

  27.      */

  28.     void childAdded(NodeChangeEvent evt);

  29. 

  30.     /**

  31.      * This method gets called when a child node is removed.

  32.      *

  33.      * @param evt A node change event object describing the parent

  34.      *            and child node.

  35.      */

  36.     void childRemoved(NodeChangeEvent evt);

  37. }