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Java > Open Source Codes > org > jfree > chart > demo > XMLBarChartDemo


1 /* ======================================
2  * JFreeChart : a free Java chart library
3  * ======================================
4  *
5  * Project Info: http://www.jfree.org/jfreechart/index.html
6  * Project Lead: David Gilbert (david.gilbert@object-refinery.com);
7  *
8  * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
9  *
10  * This library is free software; you can redistribute it and/or modify it under the terms
11  * of the GNU Lesser General Public License as published by the Free Software Foundation;
12  * either version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16  * See the GNU Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public License along with this
19  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20  * Boston, MA 02111-1307, USA.
21  *
22  * --------------------
23  * XMLBarChartDemo.java
24  * --------------------
25  * (C) Copyright 2002, 2003, by Object Refinery Limited and Contributors.
26  *
27  * Original Author: David Gilbert (for Object Refinery Limited);
28  * Contributor(s): -;
29  *
30  * $Id: XMLBarChartDemo.java,v 1.6 2003/11/28 10:57:35 mungady Exp $
31  *
32  * Changes
33  * -------
34  * 28-Oct-2002 : Version 1 (DG);
35  *
36  */
37
38 package org.jfree.chart.demo;
39
40 import java.awt.Color JavaDoc;
41 import java.io.IOException JavaDoc;
42 import java.io.InputStream JavaDoc;
43 import java.net.URL JavaDoc;
44
45 import org.jfree.chart.ChartFactory;
46 import org.jfree.chart.ChartPanel;
47 import org.jfree.chart.JFreeChart;
48 import org.jfree.chart.plot.PlotOrientation;
49 import org.jfree.data.CategoryDataset;
50 import org.jfree.data.xml.DatasetReader;
51 import org.jfree.ui.ApplicationFrame;
52 import org.jfree.ui.RefineryUtilities;
53
54 /**
55  * A simple demonstration application showing how to create a bar chart using data from an
56  * XML data file.
57  *
58  * @author David Gilbert
59  */
60 public class XMLBarChartDemo extends ApplicationFrame {
61
62     /**
63      * Default constructor.
64      *
65      * @param title the frame title.
66      */
67     public XMLBarChartDemo(String JavaDoc title) {
68
69         super(title);
70
71         // create a dataset...
72 CategoryDataset dataset = null;
73         URL JavaDoc url = getClass().getResource("/org/jfree/chart/demo/categorydata.xml");
74
75         try {
76             InputStream JavaDoc in = url.openStream();
77             dataset = DatasetReader.readCategoryDatasetFromXML(in);
78         }
79         catch (IOException JavaDoc ioe) {
80             System.out.println(ioe.getMessage());
81         }
82
83         // create the chart...
84 JFreeChart chart = ChartFactory.createBarChart(
85             "Bar Chart", // chart title
86 "Domain",
87             "Range",
88             dataset, // data
89 PlotOrientation.VERTICAL,
90             true, // include legend
91 true,
92             false
93         );
94
95         // set the background color for the chart...
96 chart.setBackgroundPaint(Color.yellow);
97
98         // add the chart to a panel...
99 ChartPanel chartPanel = new ChartPanel(chart);
100         chartPanel.setPreferredSize(new java.awt.Dimension JavaDoc(500, 270));
101         setContentPane(chartPanel);
102
103     }
104
105     // ****************************************************************************
106 // * COMMERCIAL SUPPORT / JFREECHART DEVELOPER GUIDE *
107 // * Please note that commercial support and documentation is available from: *
108 // * *
109 // * http://www.object-refinery.com/jfreechart/support.html *
110 // * *
111 // * This is not only a great service for developers, but is a VERY IMPORTANT *
112 // * source of funding for the JFreeChart project. Please support us so that *
113 // * we can continue developing free software. *
114 // ****************************************************************************
115
116     /**
117      * Starting point for the demonstration application.
118      *
119      * @param args ignored.
120      */
121     public static void main(String JavaDoc[] args) {
122
123         XMLBarChartDemo demo = new XMLBarChartDemo("XML Bar Chart Demo");
124         demo.pack();
125         RefineryUtilities.centerFrameOnScreen(demo);
126         demo.setVisible(true);
127
128     }
129
130 }
131
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