16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.util;
27
28 /**
29 * <p>
30 * The root class from which all event state objects shall be derived.
31 * <p>
32 * All Events are constructed with a reference to the object, the "source",
33 * that is logically deemed to be the object upon which the Event in question
34 * initially occurred upon.
35 *
36 * @since JDK1.1
37 */
38
39 public class EventObject implements java.io.Serializable {
40
41 private static final long serialVersionUID = 5516075349620653480L;
42
43 /**
44 * The object on which the Event initially occurred.
45 */
46 protected transient Object source;
47
48 /**
49 * Constructs a prototypical Event.
50 *
51 * @param source The object on which the Event initially occurred.
52 * @exception IllegalArgumentException if source is null.
53 */
54 public EventObject(Object source) {
55 if (source == null)
56 throw new IllegalArgumentException("null source");
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16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.util;
27
28 /**
29 * <p>
30 * The root class from which all event state objects shall be derived.
31 * <p>
32 * All Events are constructed with a reference to the object, the "source",
33 * that is logically deemed to be the object upon which the Event in question
34 * initially occurred upon.
35 *
36 * @since 1.1
37 */
38
39 public class EventObject implements java.io.Serializable {
40
41 private static final long serialVersionUID = 5516075349620653480L;
42
43 /**
44 * The object on which the Event initially occurred.
45 */
46 protected transient Object source;
47
48 /**
49 * Constructs a prototypical Event.
50 *
51 * @param source The object on which the Event initially occurred.
52 * @exception IllegalArgumentException if source is null.
53 */
54 public EventObject(Object source) {
55 if (source == null)
56 throw new IllegalArgumentException("null source");
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