在JFreeChart

Question

我试图在一秒钟之后从两个点显示一组行。但是当我运行如下所示的代码时...我得到一组最初为空的JFrame。只有当“for”时循环完成后，我看到这些帧上的数据。如果每个帧都单独显示给用户，请你帮我解决如何在帧上显示数据...提前感谢。

public class XYLineChartExample extends JFrame {
static ChartPanel panel ;
static JFreeChart chart;
public  XYLineChartExample(String title,int i) throws InterruptedException {
super(title);

    XYDataset dataset = createDataset(i);

// Create chart
chart = ChartFactory.createXYLineChart(
    "XY Line Chart Example",
    "X-Axis",
    "Y-Axis",
    dataset,
    PlotOrientation.VERTICAL,
    true, true, false);

// Create Panel
 panel = new ChartPanel(chart);
setContentPane(panel);

}

private XYDataset createDataset(int i) {
XYSeriesCollection dataset = new XYSeriesCollection();

XYSeries series = new XYSeries("Y = X + 2");
series.add(i,i+2 );
series.add(i+3,i+5 );


//Add series to dataset
dataset.addSeries(series);

return dataset;
}

public static void main(String[] args) {

SwingUtilities.invokeLater(() -> {
 for(int i=1;i<5;i++){
     try {
         XYLineChartExample example;
         example = new XYLineChartExample("XY Chart Example",i);

         example.setSize(1000, 600);
         example.setLocationRelativeTo(null);
         example.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
         example.setVisible(true);

         Thread.sleep(2000);
      //   panel.removeAll();
       //  panel.add(example);
     //    panel.updateUI();
       //   example.removeAll();
        //  example.add(chart);
      //   example.dispose();

     } catch (InterruptedException ex) {
         Logger.getLogger(XYLineChartExample.class.getName()).log(Level.SEVERE, null, ex);
     }
}
});
}
}