ObjectArray


1   /*
2     Copyright (C) 2002 Laurent Martelli <laurent@aopsys.com>
3   
4     This program is free software; you can redistribute it and/or modify
5     it under the terms of the GNU Lesser General Public License as
6     published by the Free Software Foundation; either version 2 of the
7     License, or (at your option) any later version.
8   
9     This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU Lesser General Public License for more details.
13  
14    You should have received a copy of the GNU Lesser General Public License
15    along with this program; if not, write to the Free Software
16    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
17  
18  package org.objectweb.jac.util;
19  
20  import java.util.Arrays  ;
21  
22  
23  /**
24   * This utility class wraps an array of objects and defines an
25   * <code>hashCode()</code> and an <code>equals()</code>
26   */
27  
28  public class ObjectArray {
29      Object   [] args;
30      public ObjectArray(Object  [] args) {
31          this.args = args;
32      }
33      public Object  [] getArray() {
34          return args;
35      }
36      public int hashCode() {
37          int result = 0;
38          for (int i=args.length-1; i>=0; i--) {
39              if (args[i]!=null)
40                  result = result ^ args[i].hashCode();
41          }
42          return result;
43      }
44      public boolean equals(Object   o) {
45          return (o instanceof ObjectArray) 
46              && Arrays.equals(((ObjectArray)o).args,args);
47      }
48      public String   toString() {
49          return Arrays.asList(args).toString();
50      }
51  }
52
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