[ Java 代碼範本 ] JFreeChart : BarChart/CategoryPlot - LayeredBarChartDemo2

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1. package report.demo  
2.   
3. import java.awt.*;  
4. import javax.swing.JPanel;  
5. import org.jfree.chart.*;  
6. import org.jfree.chart.axis.NumberAxis;  
7. import org.jfree.chart.plot.CategoryPlot;  
8. import org.jfree.chart.plot.PlotOrientation;  
9. import org.jfree.chart.renderer.category.LayeredBarRenderer;  
10. import org.jfree.data.category.CategoryDataset;  
11. import org.jfree.data.category.DefaultCategoryDataset;  
12. import org.jfree.ui.ApplicationFrame;  
13. import org.jfree.ui.RefineryUtilities;  
14. import org.jfree.util.SortOrder;  
15.   
16. class LayeredBarChartDemo2 extends ApplicationFrame{  
17.     /** 
18.      * 
19.      */  
20.     private static final long serialVersionUID = 1L;  
21.      
22.     public LayeredBarChartDemo2(String s)  
23.     {  
24.         super(s);  
25.         JPanel jpanel = createDemoPanel();  
26.         jpanel.setPreferredSize(new Dimension(700, 400));  
27.         setContentPane(jpanel);  
28.     }  
29.      
30.     private static CategoryDataset createDataset()  
31.     {  
32.         String s = "First";  
33.         String s1 = "Second";  
34.         String s2 = "Third";  
35.         String s3 = "Category 1";  
36.         String s4 = "Category 2";  
37.         String s5 = "Category 3";  
38.         String s6 = "Category 4";  
39.         String s7 = "Category 5";  
40.         DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();  
41.         defaultcategorydataset.addValue(1.0D, s, s3);  
42.         defaultcategorydataset.addValue(4D, s, s4);  
43.         defaultcategorydataset.addValue(3D, s, s5);  
44.         defaultcategorydataset.addValue(5D, s, s6);  
45.         defaultcategorydataset.addValue(5D, s, s7);  
46.         defaultcategorydataset.addValue(5D, s1, s3);  
47.         defaultcategorydataset.addValue(7D, s1, s4);  
48.         defaultcategorydataset.addValue(6D, s1, s5);  
49.         defaultcategorydataset.addValue(8D, s1, s6);  
50.         defaultcategorydataset.addValue(4D, s1, s7);  
51.         defaultcategorydataset.addValue(4D, s2, s3);  
52.         defaultcategorydataset.addValue(3D, s2, s4);  
53.         defaultcategorydataset.addValue(2D, s2, s5);  
54.         defaultcategorydataset.addValue(3D, s2, s6);  
55.         defaultcategorydataset.addValue(6D, s2, s7);  
56.         return defaultcategorydataset;  
57.     }  
58.      
59.     private static JFreeChart createChart(CategoryDataset categorydataset)  
60.     {  
61.         JFreeChart jfreechart = ChartFactory.createBarChart("Layered Bar Chart Demo 2", "Category", "Value", categorydataset, PlotOrientation.HORIZONTAL, true, true, false);  
62.         jfreechart.setBackgroundPaint(Color.white);  
63.         CategoryPlot categoryplot = jfreechart.getCategoryPlot();  
64.         categoryplot.setBackgroundPaint(Color.lightGray);  
65.         categoryplot.setDomainGridlinePaint(Color.white);  
66.         categoryplot.setDomainGridlinesVisible(true);  
67.         categoryplot.setRangeGridlinePaint(Color.white);  
68.         NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis();  
69.         numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());  
70.         LayeredBarRenderer layeredbarrenderer = new LayeredBarRenderer();  
71.         layeredbarrenderer.setDrawBarOutline(false);  
72.         categoryplot.setRenderer(layeredbarrenderer);  
73.         categoryplot.setRowRenderingOrder(SortOrder.DESCENDING);  
74.         GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, new Color(0, 0, 64));  
75.         GradientPaint gradientpaint1 = new GradientPaint(0.0F, 0.0F, Color.green, 0.0F, 0.0F, new Color(0, 64, 0));  
76.         GradientPaint gradientpaint2 = new GradientPaint(0.0F, 0.0F, Color.red, 0.0F, 0.0F, new Color(64, 0, 0));  
77.         layeredbarrenderer.setSeriesPaint(0, gradientpaint);  
78.         layeredbarrenderer.setSeriesPaint(1, gradientpaint1);  
79.         layeredbarrenderer.setSeriesPaint(2, gradientpaint2);  
80.         return jfreechart;  
81.     }  
82.      
83.     public static JPanel createDemoPanel()  
84.     {  
85.         JFreeChart jfreechart = createChart(createDataset());  
86.         return new ChartPanel(jfreechart);  
87.     }  
88.      
89.     public static void main(args)  
90.     {  
91.         LayeredBarChartDemo2 layeredbarchartdemo2 = new LayeredBarChartDemo2("Layered Bar Chart Demo 2");  
92.         layeredbarchartdemo2.pack();  
93.         RefineryUtilities.centerFrameOnScreen(layeredbarchartdemo2);  
94.         layeredbarchartdemo2.setVisible(true);  
95.     }  
96. }