改变legend（图释的位置）

 1 import java.awt.Color;

 2 import java.awt.Graphics;

 3 import java.awt.Graphics2D;

 4 import java.awt.Rectangle;

 5 import java.util.Map;

 6 

 7 import javax.swing.JComponent;

 8 import javax.swing.JFrame;

 9 import javax.swing.border.LineBorder;

10 

11 import org.jfree.chart.ChartFactory;

12 import org.jfree.chart.ChartFrame;

13 import org.jfree.chart.ChartTheme;

14 import org.jfree.chart.JFreeChart;

15 import org.jfree.chart.StandardChartTheme;

16 import org.jfree.chart.block.BlockFrame;

17 import org.jfree.chart.labels.StandardPieSectionLabelGenerator;

18 import org.jfree.chart.labels.StandardPieToolTipGenerator;

19 import org.jfree.chart.plot.PiePlot;

20 import org.jfree.chart.title.LegendTitle;

21 import org.jfree.data.general.DefaultPieDataset;

22 import org.jfree.ui.RectangleEdge;

23 import org.jfree.ui.RectangleInsets;

24 import org.jfree.util.Rotation;

25 

26 

27 import com.lowagie.text.Font;

28 

29 public class Main {

30    public static void main(String[] argv) {

31        DefaultPieDataset dataset = new DefaultPieDataset();

32             dataset.setValue("a",15);

33             dataset.setValue("b",20);

34             dataset.setValue("c",25);

35             dataset.setValue("d",30);

36             dataset.setValue("e",3);

37             dataset.setValue("f",2);

38             dataset.setValue("g",4);

39             dataset.setValue("h",5);

40 

41         PiePlot plot = new PiePlot(dataset);

42         JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, true);

//set legend

43         LegendTitle legend = chart.getLegend();

44         legend.setPosition(RectangleEdge.RIGHT);

//invisible the frames around legend
　　　　　　legend.setBorder(0, 0, 0, 0);



45         ChartTheme currentTheme = new StandardChartTheme("JFree");

46         currentTheme.apply(chart);

47 

48         plot.setStartAngle(290);

49         plot.setDirection(Rotation.CLOCKWISE);

50         plot.setForegroundAlpha(0.7f);

51         plot.setBackgroundAlpha(0.0f);

52 //        plot.setSimpleLabels(true);

53         

54         //disable labels

55         plot.setLabelLinksVisible(false);

56         plot.setLabelPaint(Color.white);

57         plot.setLabelShadowPaint(Color.white);

58         plot.setLabelBackgroundPaint(Color.white);

59 //        plot.setLabelLinkPaint(Color.white);

60         plot.setLabelOutlinePaint(Color.white);

61         

62         //set outline for pie

63         plot.setOutlinePaint(Color.white);

64         

65       66         

67         

68 //        plot.setLabelFont(new Font("Arial", Font.BOLD, 10));

69         plot.setLegendLabelGenerator(

70                 new StandardPieSectionLabelGenerator("{0}: {1}({2})"));

71 //        plot.setLegendLabelToolTipGenerator(

72 //                new StandardPieSectionLabelGenerator("{0} {1}, {2}"));

73         plot.setNoDataMessage("No data to display");

74         ChartFrame frame = new ChartFrame("chart",chart);

75         frame.setVisible(true);

76         frame.setSize(500,500);

77    }

78 }

This pie does not has lebal,all of which has been set white or transparent. And put the legend on the right side.