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27 
28 package convwatch;
29 
30 public class TriState
31 {
32     public static final TriState TRUE = new TriState(1);
33     public static final TriState FALSE = new TriState(0);
34     public static final TriState UNSET = new TriState(-1);
35 
36     int m_nValue;
37 
38     /**
39        Allocates a <code>TriState</code> object representing the
40        <code>value</code> argument.
41 
42        @param   value   the value of the <code>TriState</code>.
43     */
44     public TriState(int value)
45         {
46             m_nValue = value;
47         }
48 
49     /**
50        Returns the value of this TriState object as an int
51      * @return the primitive <code>int</code> value of this object.
52     */
53     public int intValue()
54         {
55             return m_nValue;
56         }
57     /**
58        Returns <code>true</code> if and only if the argument is not
59        <code>null</code> and is a <code>TriState</code> object that
60        contains the same <code>int</code> value as this object.
61 
62        @param   obj   the object to compare with.
63        @return  <code>true</code> if the objects are the same;
64                 <code>false</code> otherwise.
65     */
66 
67     public boolean equals(Object obj)
68         {
69             if ((obj != null) &&
70                 (obj instanceof TriState))
71             {
72                 return m_nValue == ((TriState)obj).intValue();
73             }
74             return false;
75         }
76 }
77