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Java > Open Source Codes > org > jfree > util > BooleanList


1 /* ========================================================================
2  * JCommon : a free general purpose class library for the Java(tm) platform
3  * ========================================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info: http://www.jfree.org/jcommon/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ----------------
28  * BooleanList.java
29  * ----------------
30  * (C) Copyright 2003, 2004, by Object Refinery Limited.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: BooleanList.java,v 1.5 2005/10/18 13:24:19 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 11-Jun-2003 : Version 1 (DG);
40  * 23-Jul-2003 : Renamed BooleanTable --> BooleanList and now extends
41  * ObjectList (DG);
42  * 13-Aug-2003 : Now extends new class AbstractObjectList (DG);
43  * 21-Oct-2004 : Removed duplicate implementation of Cloneable and Serializable,
44  * AbstractObjectList already implements that.
45  */
46
47 package org.jfree.util;
48
49 /**
50  * A list of <code>Boolean</code> objects.
51  *
52  * @author David Gilbert
53  */
54 public class BooleanList extends AbstractObjectList {
55
56     /** For serialization. */
57     private static final long serialVersionUID = -8543170333219422042L;
58     
59     /**
60      * Creates a new list.
61      */
62     public BooleanList() {
63     }
64
65     /**
66      * Returns a {@link Boolean} from the list.
67      *
68      * @param index the index (zero-based).
69      *
70      * @return a {@link Boolean} from the list.
71      */
72     public Boolean JavaDoc getBoolean(final int index) {
73         return (Boolean JavaDoc) get(index);
74     }
75
76     /**
77      * Sets the value for an item in the list. The list is expanded if
78      * necessary.
79      *
80      * @param index the index (zero-based).
81      * @param b the boolean.
82      */
83     public void setBoolean(final int index, final Boolean JavaDoc b) {
84         set(index, b);
85     }
86
87     /**
88      * Tests the list for equality with another object (typically also a list).
89      *
90      * @param o the other object.
91      *
92      * @return A boolean.
93      */
94     public boolean equals(final Object JavaDoc o) {
95
96         if (o instanceof BooleanList) {
97             return super.equals(o);
98         }
99         return false;
100     }
101
102     /**
103      * Returns a hash code value for the object.
104      *
105      * @return the hashcode
106      */
107     public int hashCode() {
108         return super.hashCode();
109     }
110 }
111
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