| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package java.util.prefs; |
| |
| import java.io.IOException; |
| import java.io.NotSerializableException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.Serializable; |
| import java.util.EventObject; |
| |
| /** |
| * This is the event class to indicate that one child of the preference node has |
| * been added or deleted. |
| * <p> |
| * Please note that although the class is marked as {@code Serializable} by |
| * inheritance from {@code EventObject}, this type is not intended to be serialized |
| * so the serialization methods do nothing but throw a {@code NotSerializableException}. |
| * |
| * @see java.util.prefs.Preferences |
| * @see java.util.prefs.NodeChangeListener |
| * |
| * @since 1.4 |
| */ |
| public class NodeChangeEvent extends EventObject implements Serializable { |
| |
| private static final long serialVersionUID = 8068949086596572957L; |
| |
| private final Preferences parent; |
| private final Preferences child; |
| |
| /** |
| * Constructs a new {@code NodeChangeEvent} instance. |
| * |
| * @param p |
| * the {@code Preferences} instance that fired this event; this object is |
| * considered as the event source. |
| * @param c |
| * the child {@code Preferences} instance that was added or deleted. |
| */ |
| public NodeChangeEvent (Preferences p, Preferences c) { |
| super(p); |
| parent = p; |
| child = c; |
| } |
| |
| /** |
| * Gets the {@code Preferences} instance that fired this event. |
| * |
| * @return the {@code Preferences} instance that fired this event. |
| */ |
| public Preferences getParent() { |
| return parent; |
| } |
| |
| /** |
| * Gets the child {@code Preferences} node that was added or removed. |
| * |
| * @return the added or removed child {@code Preferences} node. |
| */ |
| public Preferences getChild() { |
| return child; |
| } |
| |
| /** |
| * This method always throws a <code>NotSerializableException</code>, |
| * because this object cannot be serialized, |
| */ |
| private void writeObject (ObjectOutputStream out) throws IOException { |
| throw new NotSerializableException(); |
| } |
| |
| /** |
| * This method always throws a <code>NotSerializableException</code>, |
| * because this object cannot be serialized, |
| */ |
| private void readObject (ObjectInputStream in) throws IOException, ClassNotFoundException { |
| throw new NotSerializableException(); |
| } |
| } |