Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2004, 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., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * -------------------- * XYBarChartDemo2.java * -------------------- * (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: XYBarChartDemo2.java,v 1.9 2004/04/26 19:12:04 taqua Exp $ * * Changes * ------- * 20-Jun-2002 : Version 1 (DG); * 02-Jul-2002 : Removed unnecessary imports (DG); * 24-Aug-2002 : Set preferred size for ChartPanel (DG); * 11-Oct-2002 : Fixed issues reported by Checkstyle (DG); * */ package org.jfree.chart.demo; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.ClusteredXYBarRenderer; import org.jfree.data.time.Day; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.IntervalXYDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * A simple demonstration application showing how to create a vertical bar chart. * */ public class XYBarChartDemo2 extends ApplicationFrame { /** * Constructs the demo application. * * @param title the frame title. */ public XYBarChartDemo2(final String title) { super(title); // create a dataset... final TimeSeries series1 = new TimeSeries("Series 1", Day.class); series1.add(new Day(1, 1, 2003), 54.3); series1.add(new Day(2, 1, 2003), 20.3); series1.add(new Day(3, 1, 2003), 43.4); series1.add(new Day(4, 1, 2003), -12.0); final TimeSeries series2 = new TimeSeries("Series 2", Day.class); series2.add(new Day(1, 1, 2003), 8.0); series2.add(new Day(2, 1, 2003), 16.0); series2.add(new Day(3, 1, 2003), 21.0); series2.add(new Day(4, 1, 2003), 5.0); final TimeSeriesCollection data = new TimeSeriesCollection(); data.setDomainIsPointsInTime(false); data.addSeries(series1); data.addSeries(series2); final JFreeChart chart = createChart(data); // add the chart to a panel... final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 300)); setContentPane(chartPanel); } // **************************************************************************** // * JFREECHART DEVELOPER GUIDE * // * The JFreeChart Developer Guide, written by David Gilbert, is available * // * to purchase from Object Refinery Limited: * // * * // * http://www.object-refinery.com/jfreechart/guide.html * // * * // * Sales are used to provide funding for the JFreeChart project - please * // * support us so that we can continue developing free software. * // **************************************************************************** /** * Creates a chart. * * @param dataset the dataset. * * @return The chart. */ private JFreeChart createChart(final IntervalXYDataset dataset) { final JFreeChart chart = ChartFactory.createXYBarChart("XY Bar Chart Demo 2", // chart title "Date", // domain axis label true, "Y", // range axis label dataset, // data PlotOrientation.HORIZONTAL, true, // include legend true, false); // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART... final XYPlot plot = chart.getXYPlot(); plot.setRenderer(new ClusteredXYBarRenderer()); // OPTIONAL CUSTOMISATION COMPLETED. return chart; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final XYBarChartDemo2 demo = new XYBarChartDemo2("XY Bar Chart Demo 2"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }