[ Java 代碼範本 ] JFreeChart : Bar Chart (Stacked) - StackedBarChartDemo1

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UI Effect
 

Sample Code

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1. package bar.stacked;  
2.   
3. import java.awt.Color;  
4. import java.awt.Dimension;  
5.   
6. import javax.swing.JPanel;  
7.   
8. import org.jfree.chart.ChartFactory;  
9. import org.jfree.chart.ChartPanel;  
10. import org.jfree.chart.JFreeChart;  
11. import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;  
12. import org.jfree.chart.plot.CategoryPlot;  
13. import org.jfree.chart.plot.PlotOrientation;  
14. import org.jfree.chart.renderer.category.StackedBarRenderer;  
15. import org.jfree.data.category.CategoryDataset;  
16. import org.jfree.data.category.DefaultCategoryDataset;  
17. import org.jfree.ui.ApplicationFrame;  
18. import org.jfree.ui.RefineryUtilities;  
19.   
20. public class StackedBarChartDemo1 extends ApplicationFrame {  
21.   
22.     private static final long serialVersionUID = 1L;  
23.   
24.     public StackedBarChartDemo1(String s) {  
25.         super(s);  
26.         JPanel jpanel = createDemoPanel();  
27.         jpanel.setPreferredSize(new Dimension(500, 270));  
28.         setContentPane(jpanel);  
29.     }  
30.   
31.     private static CategoryDataset createDataset() {  
32.         DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();  
33.         defaultcategorydataset.addValue(32.399999999999999D, "Series 1", "Category 1");  
34.         defaultcategorydataset.addValue(17.800000000000001D, "Series 2", "Category 1");  
35.         defaultcategorydataset.addValue(27.699999999999999D, "Series 3", "Category 1");  
36.         defaultcategorydataset.addValue(43.200000000000003D, "Series 1", "Category 2");  
37.         defaultcategorydataset.addValue(15.6D, "Series 2", "Category 2");  
38.         defaultcategorydataset.addValue(18.300000000000001D, "Series 3", "Category 2");  
39.         defaultcategorydataset.addValue(23D, "Series 1", "Category 3");  
40.         defaultcategorydataset.addValue(11.300000000000001D, "Series 2", "Category 3");  
41.         defaultcategorydataset.addValue(25.5D, "Series 3", "Category 3");  
42.         defaultcategorydataset.addValue(13D, "Series 1", "Category 4");  
43.         defaultcategorydataset.addValue(11.800000000000001D, "Series 2", "Category 4");  
44.         defaultcategorydataset.addValue(29.5D, "Series 3", "Category 4");  
45.         return defaultcategorydataset;  
46.     }  
47.   
48.     private static JFreeChart createChart(CategoryDataset categorydataset) {  
49.         JFreeChart jfreechart = ChartFactory.createStackedBarChart("Stacked Bar Chart Demo 1", "Category", "Value", categorydataset, PlotOrientation.VERTICAL, true, true, false);  
50.         jfreechart.setBackgroundPaint(Color.white);  
51.         CategoryPlot categoryplot = (CategoryPlot) jfreechart.getPlot();  
52.         categoryplot.setBackgroundPaint(Color.lightGray);  
53.         categoryplot.setRangeGridlinePaint(Color.white);  
54.         StackedBarRenderer stackedbarrenderer = (StackedBarRenderer) categoryplot.getRenderer();  
55.         stackedbarrenderer.setDrawBarOutline(false);  
56.         stackedbarrenderer.setBaseItemLabelsVisible(true);  
57.         stackedbarrenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());  
58.         return jfreechart;  
59.     }  
60.   
61.     public static JPanel createDemoPanel() {  
62.         JFreeChart jfreechart = createChart(createDataset());  
63.         return new ChartPanel(jfreechart);  
64.     }  
65.   
66.     public static void main(String args[]) {  
67.         StackedBarChartDemo1 stackedbarchartdemo1 = new StackedBarChartDemo1("Stacked Bar Chart Demo 1");  
68.         stackedbarchartdemo1.pack();  
69.         RefineryUtilities.centerFrameOnScreen(stackedbarchartdemo1);  
70.         stackedbarchartdemo1.setVisible(true);  
71.     }  
72. }