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 | Voici mon code : 
import  org.jfree.chart.ChartFactory;
import  org.jfree.chart.ChartFrame;
import  org.jfree.chart.JFreeChart;
import  org.jfree.data.general.DefaultPieDataset;
 
/**
* A simple introduction to using JFreeChart.
*/
public class First {
 
/**
* The starting point for the demo.
*
* @param  args ignored.
*/
 
  public static void main(String[] args) {
 
    //create a dataset...
    DefaultPieDataset data=new DefaultPieDataset();
    data.setValue("Category1",43.2);
    data.setValue("Category2",27.9);
    data.setValue("Category3",79.5);
 
    //create a chart...
    JFreeChart chart=ChartFactory.createPieChart( "SamplePieChart", data, true/*legend?*/,true/*tooltips?*/, false/*URLs?*/);
 
    //create and display a frame...
    ChartFrame frame=new ChartFrame("First",chart);
    frame.pack();
    frame.setVisible(true);
  }
 
} | 
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