jdk/src/share/classes/java/util/prefs/NodeChangeListener.java

/*
 * Copyright 2000 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package java.util.prefs;

/**
 * A listener for receiving preference node change events.
 *
 * @author  Josh Bloch
 * @see     Preferences
 * @see     NodeChangeEvent
 * @see     PreferenceChangeListener
 * @since   1.4
 */

public interface NodeChangeListener extends java.util.EventListener {
    /**
     * This method gets called when a child node is added.
     *
     * @param evt A node change event object describing the parent
     *            and child node.
     */
    void childAdded(NodeChangeEvent evt);

    /**
     * This method gets called when a child node is removed.
     *
     * @param evt A node change event object describing the parent
     *            and child node.
     */
    void childRemoved(NodeChangeEvent evt);
}