01: /**
02: * ========================================
03: * JFreeReport : a free Java report library
04: * ========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * $Id: InstanceID.java 3048 2007-07-28 18:02:42Z tmorgner $
27: * ------------
28: * (C) Copyright 2000-2005, by Object Refinery Limited.
29: * (C) Copyright 2005-2007, by Pentaho Corporation.
30: */package org.jfree.report.util;
31:
32: import java.io.Serializable;
33:
34: /**
35: * This class can be used as ID to mark instances of objects. This allows to track and
36: * identify objects and their clones.
37: *
38: * @author Thomas Morgner
39: */
40: public final class InstanceID implements Serializable {
41: /**
42: * DefaultConstructor.
43: */
44: public InstanceID() {
45: }
46:
47: /**
48: * Returns a simple string representation of this object to make is identifiable by
49: * human users.
50: *
51: * @return the string representation.
52: */
53: public String toString() {
54: return "InstanceID[" + hashCode() + "]";
55: }
56: }
|