001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2006, by Object Refinery Limited 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 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * --------------
028 * YInterval.java
029 * --------------
030 * (C) Copyright 2006, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * $Id: YInterval.java,v 1.1.2.1 2006/10/20 15:23:22 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 20-Oct-2006 : Version 1 (DG);
040 *
041 */
042
043 package org.jfree.data.xy;
044
045 import java.io.Serializable;
046
047 /**
048 * A y-interval. This class is used internally by the
049 * {@link YIntervalDataItem} class.
050 *
051 * @since 1.0.3
052 */
053 public class YInterval implements Serializable {
054
055 /** The y-value. */
056 private double y;
057
058 /** The lower bound of the y-interval. */
059 private double yLow;
060
061 /** The upper bound of the y-interval. */
062 private double yHigh;
063
064 /**
065 * Creates a new instance of <code>YInterval</code>.
066 *
067 * @param y the y-value.
068 * @param yLow the lower bound of the y-interval.
069 * @param yHigh the upper bound of the y-interval.
070 */
071 public YInterval(double y, double yLow, double yHigh) {
072 this.y = y;
073 this.yLow = yLow;
074 this.yHigh = yHigh;
075 }
076
077 /**
078 * Returns the y-value.
079 *
080 * @return The y-value.
081 */
082 public double getY() {
083 return this.y;
084 }
085
086 /**
087 * Returns the lower bound of the y-interval.
088 *
089 * @return The lower bound of the y-interval.
090 */
091 public double getYLow() {
092 return this.yLow;
093 }
094
095 /**
096 * Returns the upper bound of the y-interval.
097 *
098 * @return The upper bound of the y-interval.
099 */
100 public double getYHigh() {
101 return this.yHigh;
102 }
103
104 /**
105 * Tests this instance for equality with an arbitrary object.
106 *
107 * @param obj the object (<code>null</code> permitted).
108 *
109 * @return A boolean.
110 */
111 public boolean equals(Object obj) {
112 if (obj == this) {
113 return true;
114 }
115 if (!(obj instanceof YInterval)) {
116 return false;
117 }
118 YInterval that = (YInterval) obj;
119 if (this.y != that.y) {
120 return false;
121 }
122 if (this.yLow != that.yLow) {
123 return false;
124 }
125 if (this.yHigh != that.yHigh) {
126 return false;
127 }
128 return true;
129 }
130
131 }