001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, 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 2006-2008, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * Changes
036 * -------
037 * 20-Oct-2006 : Version 1 (DG);
038 *
039 */
040
041 package org.jfree.data.xy;
042
043 import java.io.Serializable;
044
045 /**
046 * A y-interval. This class is used internally by the
047 * {@link YIntervalDataItem} class.
048 *
049 * @since 1.0.3
050 */
051 public class YInterval implements Serializable {
052
053 /** The y-value. */
054 private double y;
055
056 /** The lower bound of the y-interval. */
057 private double yLow;
058
059 /** The upper bound of the y-interval. */
060 private double yHigh;
061
062 /**
063 * Creates a new instance of <code>YInterval</code>.
064 *
065 * @param y the y-value.
066 * @param yLow the lower bound of the y-interval.
067 * @param yHigh the upper bound of the y-interval.
068 */
069 public YInterval(double y, double yLow, double yHigh) {
070 this.y = y;
071 this.yLow = yLow;
072 this.yHigh = yHigh;
073 }
074
075 /**
076 * Returns the y-value.
077 *
078 * @return The y-value.
079 */
080 public double getY() {
081 return this.y;
082 }
083
084 /**
085 * Returns the lower bound of the y-interval.
086 *
087 * @return The lower bound of the y-interval.
088 */
089 public double getYLow() {
090 return this.yLow;
091 }
092
093 /**
094 * Returns the upper bound of the y-interval.
095 *
096 * @return The upper bound of the y-interval.
097 */
098 public double getYHigh() {
099 return this.yHigh;
100 }
101
102 /**
103 * Tests this instance for equality with an arbitrary object.
104 *
105 * @param obj the object (<code>null</code> permitted).
106 *
107 * @return A boolean.
108 */
109 public boolean equals(Object obj) {
110 if (obj == this) {
111 return true;
112 }
113 if (!(obj instanceof YInterval)) {
114 return false;
115 }
116 YInterval that = (YInterval) obj;
117 if (this.y != that.y) {
118 return false;
119 }
120 if (this.yLow != that.yLow) {
121 return false;
122 }
123 if (this.yHigh != that.yHigh) {
124 return false;
125 }
126 return true;
127 }
128
129 }