import org.jfree.chart.JFreeChart;
import org.jfree.chart.ChartFactory;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.chart.plot.PlotOrientation;

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

import org.jfree.chart.plot.Plot;

public class Test13_1 extends JFrame{
  public static void main(String[] args) {
    Test13_1 frame = new Test13_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);
  }

  Test13_1(){
    JFreeChart chart = 
      ChartFactory.createBarChart("月別売上",
                                  "月",
                                  "売上",
                                  createData(),
                                  PlotOrientation.VERTICAL,
                                  true,
                                  false,
                                  false);

    Plot plot = chart.getPlot();
    plot.setNoDataMessage("データがありません");

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

  private DefaultCategoryDataset createData(){
    DefaultCategoryDataset data = new DefaultCategoryDataset();

    return data;
  }
}