1 /* Licensed to the Apache Software Foundation (ASF) under one or more 2 * contributor license agreements. See the NOTICE file distributed with 3 * this work for additional information regarding copyright ownership. 4 * The ASF licenses this file to You under the Apache License, Version 2.0 5 * (the "License"); you may not use this file except in compliance with 6 * the License. You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package java.util.prefs; 18 19 import java.util.EventListener; 20 21 /** 22 * This interface is used to handle preference node change events. The 23 * implementation of this interface can be installed by the {@code Preferences} 24 * instance. 25 * 26 * @see Preferences 27 * @see NodeChangeEvent 28 * 29 * @since 1.4 30 */ 31 public interface NodeChangeListener extends EventListener { 32 /** 33 * This method gets called whenever a child node is added to another node. 34 * 35 * @param e 36 * the node change event. 37 */ 38 public void childAdded (NodeChangeEvent e); 39 40 /** 41 * This method gets called whenever a child node is removed from another 42 * node. 43 * 44 * @param e 45 * the node change event. 46 */ 47 public void childRemoved (NodeChangeEvent e); 48 } 49
