import org.jfree.chart.JFreeChart;
import org.jfree.chart.ChartFactory;
import org.jfree.data.general.WaferMapDataset;
import org.jfree.chart.plot.PlotOrientation;

import javax.swing.JFrame;
import java.awt.BorderLayout;
import org.jfree.chart.ChartPanel;

public class Test2_1 extends JFrame{
  public static void main(String[] args) {
    Test2_1 frame = new Test2_1();

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setBounds(10, 10, 500, 500);
    frame.setTitle("グラフサンプル");
    frame.setVisible(true);
  }

  Test2_1(){
    JFreeChart chart = ChartFactory.createWaferMapChart("ウェハマップ", 
                                                    createData(),
                                                    PlotOrientation.VERTICAL, 
                                                    false, 
                                                    false, 
                                                    false);

    ChartPanel cpanel = new ChartPanel(chart);
    getContentPane().add(cpanel, BorderLayout.CENTER);
  }

  private WaferMapDataset createData(){
    WaferMapDataset data = new WaferMapDataset(20, 20);

    data.addValue(1, 2, 4);
    data.addValue(3, 12, 16);
    data.addValue(2, 9, 12);
    data.addValue(7, 5, 8);

    return data;
  }
}