Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners.] * * ------------- * OHLCItem.java * ------------- * (C) Copyright 2006, 2007, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 04-Dec-2006 : Version 1 (DG); * */ package org.jfree.data.time.ohlc; import org.jfree.data.ComparableObjectItem; import org.jfree.data.time.RegularTimePeriod; /** * An item representing data in the form <code>(time-period, open, high, low, * close)</code>. * * @since 1.0.4 */ public class OHLCItem extends ComparableObjectItem { /** * Creates a new instance of <code>OHLCItem</code>. * * @param period the time period. * @param open the open-value. * @param high the high-value. * @param low the low-value. * @param close the close-value. */ public OHLCItem(RegularTimePeriod period, double open, double high, double low, double close) { super(period, new OHLC(open, high, low, close)); } /** * Returns the period. * * @return The period (never <code>null</code>). */ public RegularTimePeriod getPeriod() { return (RegularTimePeriod) getComparable(); } /** * Returns the y-value. * * @return The y-value. */ public double getYValue() { return getCloseValue(); } /** * Returns the open value. * * @return The open value. */ public double getOpenValue() { OHLC ohlc = (OHLC) getObject(); if (ohlc != null) { return ohlc.getOpen(); } else { return Double.NaN; } } /** * Returns the high value. * * @return The high value. */ public double getHighValue() { OHLC ohlc = (OHLC) getObject(); if (ohlc != null) { return ohlc.getHigh(); } else { return Double.NaN; } } /** * Returns the low value. * * @return The low value. */ public double getLowValue() { OHLC ohlc = (OHLC) getObject(); if (ohlc != null) { return ohlc.getLow(); } else { return Double.NaN; } } /** * Returns the close value. * * @return The close value. */ public double getCloseValue() { OHLC ohlc = (OHLC) getObject(); if (ohlc != null) { return ohlc.getClose(); } else { return Double.NaN; } } }