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Java > Open Source Codes > com > sun > appserv > management > util > misc > CompareUtil


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23  
24 /*
25  * $Header: /cvs/glassfish/admin-core/mbeanapi/src/java/com/sun/appserv/management/util/misc/CompareUtil.java,v 1.3 2005/12/25 03:51:43 tcfujii Exp $
26  * $Revision: 1.3 $
27  * $Date: 2005/12/25 03:51:43 $
28  */
29
30 package com.sun.appserv.management.util.misc;
31
32 import com.sun.appserv.management.util.misc.ClassUtil;
33
34 /**
35     Provides a variety of useful utilities for comparing objects.
36  */
37  
38 public final class CompareUtil
39 {
40         private
41     CompareUtil( )
42     {
43         // disallow instantiation
44 }
45     
46     
47         public static boolean
48     objectsEqual( Object JavaDoc o1, Object JavaDoc o2 )
49     {
50         boolean equal = o1 == o2;
51         
52         if ( ! equal )
53         {
54             if ( o1 == null )
55             {
56                 // o1 is null, but o2 is not
57 equal = false;
58             }
59             else
60             {
61                 equal = o1.equals( o2 );
62                 if ( ! equal )
63                 {
64                     if ( ClassUtil.objectIsArray( o1 ) )
65                     {
66                         equal = ArrayUtil.arraysEqual( o1, o2 );
67                     }
68                 }
69             }
70         }
71         
72         return( equal );
73     }
74 }
75
76
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