001/* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-present, by David Gilbert and Contributors.
006 *
007 * Project Info:  http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
022 * USA.
023 *
024 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
025 * Other names may be trademarks of their respective owners.]
026 *
027 * ----------------
028 * BooleanList.java
029 * ----------------
030 * (C) Copyright 2000-present, by David Gilbert and Contributors.
031 *
032 * Original Author:  David Gilbert;
033 * Contributors:     -;
034 */
035
036package org.jfree.chart.util;
037
038/**
039 * A list of {@code Boolean} objects.
040 */
041public class BooleanList extends AbstractObjectList {
042
043    /** For serialization. */
044    private static final long serialVersionUID = -8543170333219422042L;
045    
046    /**
047     * Creates a new list.
048     */
049    public BooleanList() {
050    }
051
052    /**
053     * Returns a {@link Boolean} from the list.
054     *
055     * @param index the index (zero-based).
056     *
057     * @return a {@link Boolean} from the list.
058     */
059    public Boolean getBoolean(int index) {
060        return (Boolean) get(index);
061    }
062
063    /**
064     * Sets the value for an item in the list.  The list is expanded if 
065     * necessary.
066     *
067     * @param index  the index (zero-based).
068     * @param b  the boolean.
069     */
070    public void setBoolean(int index, Boolean b) {
071        set(index, b);
072    }
073
074    /**
075     * Tests the list for equality with another object (typically also a list).
076     *
077     * @param o  the other object.
078     *
079     * @return A boolean.
080     */
081    @Override
082    public boolean equals(Object o) {
083        if (o instanceof BooleanList) {
084            return super.equals(o);
085        }
086        return false;
087    }
088
089    /**
090     * Returns a hash code value for the object.
091     *
092     * @return the hashcode
093     */
094    @Override
095    public int hashCode() {
096        return super.hashCode();
097    }
098}
099