KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > alfresco > util > EqualsHelper


1 /*
2  * Copyright (C) 2005 Alfresco, Inc.
3  *
4  * Licensed under the Mozilla Public License version 1.1
5  * with a permitted attribution clause. You may obtain a
6  * copy of the License at
7  *
8  * http://www.alfresco.org/legal/license.txt
9  *
10  * Unless required by applicable law or agreed to in writing,
11  * software distributed under the License is distributed on an
12  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13  * either express or implied. See the License for the specific
14  * language governing permissions and limitations under the
15  * License.
16  */
17 package org.alfresco.util;
18
19 /**
20  * Utility class providing helper methods for various types of <code>equals</code> functionality
21  *
22  * @author Derek Hulley
23  */
24 public class EqualsHelper
25 {
26     /**
27      * Performs an equality check <code>left.equals(right)</code> after checking for null values
28      *
29      * @param left the Object appearing in the left side of an <code>equals</code> statement
30      * @param right the Object appearing in the right side of an <code>equals</code> statement
31      * @return Return true or false even if one or both of the objects are null
32      */
33     public static boolean nullSafeEquals(Object JavaDoc left, Object JavaDoc right)
34     {
35         return (left == right) || (left != null && right != null && left.equals(right));
36     }
37 }
38
Popular Tags