jfreechart 饼形图

 

 

代码：

 

import java.awt.Color;
import java.awt.Dimension;
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class PieChartDemo2 extends ApplicationFrame
{

 public PieChartDemo2(String s)
 {
  super(s);
  JPanel jpanel = createDemoPanel();
  jpanel.setPreferredSize(new Dimension(500, 270));
  setContentPane(jpanel);
 }

 private static PieDataset createDataset()
 {
  DefaultPieDataset defaultpiedataset = new DefaultPieDataset();
  defaultpiedataset.setValue("One", 43.200000000000003D);
  defaultpiedataset.setValue("Two", 10D);
  defaultpiedataset.setValue("Three", 27.5D);
  defaultpiedataset.setValue("Four", 17.5D);
  defaultpiedataset.setValue("Five", 11D);
  defaultpiedataset.setValue("Six", 19.399999999999999D);
  return defaultpiedataset;
 }

 private static JFreeChart createChart(PieDataset piedataset)
 {
  JFreeChart jfreechart = ChartFactory.createPieChart("Pie Chart Demo 2", piedataset, true, true, false);
  PiePlot pieplot = (PiePlot)jfreechart.getPlot();
  pieplot.setSectionPaint("One", new Color(160, 160, 255));
  pieplot.setSectionPaint("Two", new Color(128, 128, 223));
  pieplot.setSectionPaint("Three", new Color(96, 96, 191));
  pieplot.setSectionPaint("Four", new Color(64, 64, 159));
  pieplot.setSectionPaint("Five", new Color(32, 32, 127));
  pieplot.setSectionPaint("Six", new Color(0, 0, 111));
  pieplot.setNoDataMessage("No data available");
  pieplot.setExplodePercent("Two", 0.20000000000000001D);
  pieplot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0} ({2} percent)"));
  pieplot.setLabelBackgroundPaint(new Color(220, 220, 220));
  pieplot.setLegendLabelToolTipGenerator(new StandardPieSectionLabelGenerator("Tooltip for legend item {0}"));
  pieplot.setSimpleLabels(true);
  pieplot.setInteriorGap(0.0D);
  return jfreechart;
 }

 public static JPanel createDemoPanel()
 {
  JFreeChart jfreechart = createChart(createDataset());
  return new ChartPanel(jfreechart);
 }

 public static void main(String args[])
 {
  PieChartDemo2 piechartdemo2 = new PieChartDemo2("JFreeChart: PieChartDemo2.java");
  piechartdemo2.pack();
  RefineryUtilities.centerFrameOnScreen(piechartdemo2);
  piechartdemo2.setVisible(true);
 }
}