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Java > Open Source Codes > com > mchange > v2 > lang > ObjectUtils


1 /*
2  * Distributed as part of c3p0 v.0.9.1
3  *
4  * Copyright (C) 2005 Machinery For Change, Inc.
5  *
6  * Author: Steve Waldman <swaldman@mchange.com>
7  *
8  * This library is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU Lesser General Public License version 2.1, as
10  * published by the Free Software Foundation.
11  *
12  * This software is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with this software; see the file LICENSE. If not, write to the
19  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20  * Boston, MA 02111-1307, USA.
21  */
22
23
24 package com.mchange.v2.lang;
25
26 public final class ObjectUtils
27 {
28     public static boolean eqOrBothNull(Object JavaDoc a, Object JavaDoc b)
29     {
30     if (a == b)
31         return true;
32     else if (a == null)
33         return false;
34     else
35         return a.equals(b);
36     }
37     
38     /**
39      * Note -- if you are using Arrays.equals( ... ) or similar
40      * and want a compatible hash method, see methods in
41      * {@link com.mchange.v1.util.ArrayUtils#hashOrZeroArray ArrayUtils}.
42      */
43     public static int hashOrZero(Object JavaDoc o)
44     { return (o == null ? 0 : o.hashCode()); }
45
46     private ObjectUtils()
47     {}
48 }
49
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