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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [java/] [util/] [EventObject.java] - Rev 778
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/* EventObject.java -- represents an event on an object Copyright (C) 1999, 2000, 2002, 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath 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 for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ package java.util; import java.io.Serializable; /** * Represents Events fired by Objects. * * @author Eric Blake (ebb9@email.byu.edu) * @see EventListener * @since 1.1 * @status updated to 1.4 */ public class EventObject implements Serializable { /** * Compatible with JDK 1.1+. */ private static final long serialVersionUID = 5516075349620653480L; /** * The source object; in other words, the object which this event takes * place on. */ protected transient Object source; /** * Constructs an EventObject with the specified source. * * @param source the source of the event * @throws IllegalArgumentException if source is null (This is not * specified, but matches the behavior of the JDK) */ public EventObject(Object source) { // This check for null is stupid, if you ask me, since source is // protected and non-final, so a subclass can set it to null later on. if (source == null) throw new IllegalArgumentException(); this.source = source; } /** * Returns the source of the event. * * @return the event source */ public Object getSource() { return source; } /** * Converts the event to a String. The format is not specified, but by * observation, the JDK uses: * <code>getClass().getName() + "[source=" + source + "]";</code>. * * @return String representation of the Event */ public String toString() { return getClass().getName() + "[source=" + source + "]"; } } // class EventObject
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