Java/Chart/XY Bar Chart

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JFreeChart: XY Bar Chart Demo

   <source lang="java">

/* ===========================================================

* 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.]
*
* -------------------
* XYBarChartDemo.java
* -------------------
* (C) Copyright 2002-2004, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: XYBarChartDemo.java,v 1.11 2004/05/11 14:56:17 mungady 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 java.awt.Color; import java.awt.GradientPaint; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.DateTickMarkPosition; import org.jfree.chart.labels.StandardXYToolTipGenerator; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYItemRenderer; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /**

* A simple demonstration application showing how to create a vertical bar chart.
*
*/

public class XYBarChartDemo extends ApplicationFrame {

   /**
    * Constructs the demo application.
    *
    * @param title  the frame title.
    */
   public XYBarChartDemo(final String title) {
       super(title);
       final TimeSeriesCollection data = DemoDatasetFactory.createTimeSeriesCollection1();
       data.setDomainIsPointsInTime(false);
       final JFreeChart chart = ChartFactory.createXYBarChart(
           title,
           "X",
           true,
           "Y",
           data,
           PlotOrientation.VERTICAL,
           true,
           false,
           false
       );
       // then customise it a little...
       chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 1000, 0, Color.blue));
       final XYItemRenderer renderer = chart.getXYPlot().getRenderer();
       final StandardXYToolTipGenerator generator = new StandardXYToolTipGenerator(
           "{1} = {2}", new SimpleDateFormat("yyyy"), new DecimalFormat("0.00")
       );
       renderer.setToolTipGenerator(generator);
       final XYPlot plot = chart.getXYPlot();
       final DateAxis axis = (DateAxis) plot.getDomainAxis();
       axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
       
       // 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.ru/jfreechart/guide.html                     *
   // *                                                                          *
   // * Sales are used to provide funding for the JFreeChart project - please    * 
   // * support us so that we can continue developing free software.             *
   // ****************************************************************************
   
   /**
    * Starting point for the demonstration application.
    *
    * @param args  ignored.
    */
   public static void main(final String[] args) {
       final XYBarChartDemo demo = new XYBarChartDemo("XY Bar Chart Demo");
       demo.pack();
       RefineryUtilities.centerFrameOnScreen(demo);
       demo.setVisible(true);
   }

}


      </source>