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Java - JFreeChart Example

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  1. import java.awt.Font;
  2.  
  3. import javax.swing.JFrame;
  4. import javax.swing.JPanel;
  5.  
  6. import org.jfree.chart.ChartFactory;
  7. import org.jfree.chart.ChartPanel;
  8. import org.jfree.chart.JFreeChart;
  9. import org.jfree.chart.plot.PiePlot;
  10. import org.jfree.data.general.DefaultPieDataset;
  11.  
  12. public class jfcExample extends JFrame
  13. {
  14. 	private static final long serialVersionUID = 1L;
  15.  
  16. 	private DefaultPieDataset dataset;
  17. 	private JFreeChart jfc;
  18.  
  19. 	public jfcExample()
  20. 	{
  21. 		dataset = new DefaultPieDataset();
  22. 	}
  23.  
  24. 	public void setValue(String title, Double numDouble)
  25. 	{
  26. 		dataset.setValue(title, numDouble);
  27. 	}
  28.  
  29. 	public void setChar(String title)
  30. 	{
  31. 		jfc = ChartFactory.createPieChart(title, dataset, true, true, false);
  32.  
  33. 		PiePlot pp = (PiePlot) jfc.getPlot();
  34. 		pp.setSectionOutlinesVisible(false);
  35. 		pp.setLabelFont(new Font("SansSerif", Font.PLAIN, 12));
  36. 		pp.setNoDataMessage("Nessun Dato Inserito");
  37. 		pp.setCircular(false);
  38. 		pp.setLabelGap(0.02);
  39. 	}
  40.  
  41. 	private JPanel createPanel()
  42. 	{
  43. 		return new ChartPanel(jfc);
  44. 	}
  45.  
  46. 	public void Show()
  47. 	{
  48. 		setContentPane(createPanel());
  49. 		setVisible(true);
  50. 	}
  51.  
  52. 	public static void main(String[] args)
  53. 	{
  54. 		jfcExample j = new jfcExample();
  55. 		j.setTitle("Example Chart...");
  56. 		j.setSize(640, 430);
  57.  
  58. 		j.setValue("UNO", new Double(20.0));
  59. 		j.setValue("DUE", new Double(10.0));
  60. 		j.setValue("TRE", new Double(20.0));
  61. 		j.setValue("QUATTRO", new Double(30.0));
  62. 		j.setValue("CINQUE", new Double(20.0));
  63.  
  64. 		j.setChar("Example Chart...");
  65.  
  66. 		j.Show();
  67. 	}
  68. }

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