[ Java 代碼範本 ] JFreeChart : showcases - StatisticalBarChartDemo1

UI Effect

Sample Code

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1. package showcases;  
2.   
3. import org.jfree.chart.ChartFactory;  
4. import org.jfree.chart.ChartPanel;  
5. import org.jfree.chart.JFreeChart;  
6. import org.jfree.chart.axis.NumberAxis;  
7. import org.jfree.chart.labels.ItemLabelAnchor;  
8. import org.jfree.chart.labels.ItemLabelPosition;  
9. import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;  
10. import org.jfree.chart.plot.CategoryPlot;  
11. import org.jfree.chart.plot.PlotOrientation;  
12. import org.jfree.chart.renderer.category.StatisticalBarRenderer;  
13. import org.jfree.data.category.CategoryDataset;  
14. import org.jfree.data.statistics.DefaultStatisticalCategoryDataset;  
15. import org.jfree.ui.ApplicationFrame;  
16. import org.jfree.ui.RefineryUtilities;  
17. import org.jfree.ui.TextAnchor;  
18.   
19. import javax.swing.*;  
20. import java.awt.*;  
21.   
22. /** 
23. * https://code.google.com/p/grape/source/browse/trunk/code/dealWithExcel/src/shai/jfreechart/StatisticalBarChartDemo1.java?r=50 
24. * @author 奎慶 
25. */  
26. public class StatisticalBarChartDemo1 extends ApplicationFrame{  
27.     public StatisticalBarChartDemo1(String paramString) {  
28.         super(paramString);  
29.         JPanel localJPanel = createDemoPanel();  
30.         localJPanel.setPreferredSize(new Dimension(750, 500));  
31.         setContentPane(localJPanel);  
32.     }  
33.   
34.     private static CategoryDataset createDataset() {  
35.         DefaultStatisticalCategoryDataset localDefaultStatisticalCategoryDataset = new DefaultStatisticalCategoryDataset();  
36.         localDefaultStatisticalCategoryDataset.add(10.0D, 2.4D, "Row 1", "Column 1");  
37.         localDefaultStatisticalCategoryDataset.add(15.0D, 4.4D, "Row 1", "Column 2");  
38.         localDefaultStatisticalCategoryDataset.add(13.0D, 2.1D, "Row 1", "Column 3");  
39.         localDefaultStatisticalCategoryDataset.add(7.0D, 1.3D, "Row 1", "Column 4");  
40.         localDefaultStatisticalCategoryDataset.add(22.0D, 2.4D, "Row 2", "Column 1");  
41.         localDefaultStatisticalCategoryDataset.add(18.0D, 4.4D, "Row 2", "Column 2");  
42.         localDefaultStatisticalCategoryDataset.add(28.0D, 2.1D, "Row 2", "Column 3");  
43.         localDefaultStatisticalCategoryDataset.add(17.0D, 1.3D, "Row 2", "Column 4");  
44.         return localDefaultStatisticalCategoryDataset;  
45.     }  
46.   
47.     private static JFreeChart createChart(CategoryDataset paramCategoryDataset) {  
48.         JFreeChart localJFreeChart = ChartFactory.createLineChart("Statistical Bar Chart Demo 1", "Type", "Value", paramCategoryDataset, PlotOrientation.VERTICAL, true, true, false);  
49.         CategoryPlot localCategoryPlot = (CategoryPlot) localJFreeChart.getPlot();  
50.         NumberAxis localNumberAxis = (NumberAxis) localCategoryPlot.getRangeAxis();  
51.         localNumberAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());  
52.         localNumberAxis.setAutoRangeIncludesZero(false);  
53.         StatisticalBarRenderer localStatisticalBarRenderer = new StatisticalBarRenderer();  
54.         localStatisticalBarRenderer.setDrawBarOutline(false);  
55.         localStatisticalBarRenderer.setErrorIndicatorPaint(Color.black);  
56.         localCategoryPlot.setRenderer(localStatisticalBarRenderer);  
57.         localStatisticalBarRenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());  
58.         localStatisticalBarRenderer.setBaseItemLabelsVisible(true);  
59.         localStatisticalBarRenderer.setBaseItemLabelPaint(Color.yellow);  
60.         localStatisticalBarRenderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.INSIDE6, TextAnchor.BOTTOM_CENTER));  
61.         GradientPaint localGradientPaint1 = new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, new Color(0, 0, 64));  
62.         GradientPaint localGradientPaint2 = new GradientPaint(0.0F, 0.0F, Color.green, 0.0F, 0.0F, new Color(0, 64, 0));  
63.         localStatisticalBarRenderer.setSeriesPaint(0, localGradientPaint1);  
64.         localStatisticalBarRenderer.setSeriesPaint(1, localGradientPaint2);  
65.         return localJFreeChart;  
66.     }  
67.   
68.     public static JPanel createDemoPanel() {  
69.         JFreeChart localJFreeChart = createChart(createDataset());  
70.         return new ChartPanel(localJFreeChart);  
71.     }  
72.   
73.     public static void main(String[] paramArrayOfString) {  
74.         StatisticalBarChartDemo1 localStatisticalBarChartDemo1 = new StatisticalBarChartDemo1("Statistical Bar Chart Demo");  
75.         localStatisticalBarChartDemo1.pack();  
76.         RefineryUtilities.centerFrameOnScreen(localStatisticalBarChartDemo1);  
77.         localStatisticalBarChartDemo1.setVisible(true);  
78.     }  
79. }