| /* |
| * 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; |
| |
| |
| import java.io.Serializable; |
| |
| /** |
| * {@code EventObject}s represent events. Typically applications subclass this class to |
| * add event specific information. |
| * |
| * @see EventListener |
| */ |
| public class EventObject implements Serializable { |
| |
| private static final long serialVersionUID = 5516075349620653480L; |
| |
| @FindBugsSuppressWarnings("SE_TRANSIENT_FIELD_NOT_RESTORED") |
| protected transient Object source; |
| |
| /** |
| * Constructs a new instance of this class. |
| * |
| * @param source |
| * the object which fired the event. |
| */ |
| public EventObject(Object source) { |
| if (source == null) { |
| throw new IllegalArgumentException(); |
| } |
| this.source = source; |
| } |
| |
| /** |
| * Returns the object which fired the event. |
| */ |
| public Object getSource() { |
| return source; |
| } |
| |
| /** |
| * Returns the string representation of this {@code EventObject}. |
| */ |
| @Override public String toString() { |
| return getClass().getName() + "[source=" + source + ']'; |
| } |
| } |