Enum


1   /*
2     * JBoss, Home of Professional Open Source
3     * Copyright 2005, JBoss Inc., and individual contributors as indicated
4     * by the @authors tag. See the copyright.txt in the distribution for a
5     * full listing of individual contributors.
6     *
7     * This is free software; you can redistribute it and/or modify it
8     * under the terms of the GNU Lesser General Public License as
9     * published by the Free Software Foundation; either version 2.1 of
10    * the License, or (at your option) any later version.
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 GNU
15    * Lesser General Public License for more details.
16    *
17    * You should have received a copy of the GNU Lesser General Public
18    * License along with this software; if not, write to the Free
19    * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20    * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21    */
22  package org.jboss.lang;
23  
24  /**
25   * Base class for JDK 1.4 Enums
26   *
27   * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
28   * @version $Revision: 37406 $
29   *
30   **/
31  public abstract class Enum implements java.io.Serializable  
32  {
33     protected final transient String   name;
34     protected final int ordinal;
35  
36     protected Enum(String   name, int ordinal)
37     {
38        this.name = name;
39        this.ordinal = ordinal;
40     }
41     public String   toString()
42     {
43        return name;
44     }
45  
46     public String   name()
47     {
48        return name;
49     }
50  
51     public int ordinal()
52     {
53        return ordinal;
54     }
55  
56     public boolean equals(Object   o)
57     {
58        if (o == this) return true;
59        if (o == null) return false;
60        if (!(o instanceof Enum  )) return false;
61        if (!o.getClass().equals(this.getClass())) return false;
62        Enum   en = (Enum  )o;
63        return en.ordinal == this.ordinal;
64     }
65  
66     public int hashCode()
67     {
68        return name.hashCode();
69     }
70  
71  }
72
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