dynamicdatademo1.java

Jfreechart 源码例子 是和jfreechart development Guide文档相配套的

package demo;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.PrintStream;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.time.Millisecond;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class DynamicDataDemo1 extends ApplicationFrame
{
  static Class class$org$jfree$data$time$Millisecond;

  public DynamicDataDemo1(String paramString)
  {
    super(paramString);
    MyDemoPanel localMyDemoPanel = new MyDemoPanel();
    setContentPane(localMyDemoPanel);
  }

  public static JPanel createDemoPanel()
  {
    return new MyDemoPanel();
  }

  public static void main(String[] paramArrayOfString)
  {
    DynamicDataDemo1 localDynamicDataDemo1 = new DynamicDataDemo1("JFreeChart: DynamicDataDemo1.java");
    localDynamicDataDemo1.pack();
    RefineryUtilities.centerFrameOnScreen(localDynamicDataDemo1);
    localDynamicDataDemo1.setVisible(true);
  }

  static Class class$(String paramString)
  {
    try
    {
      return Class.forName(paramString);
    }
    catch (ClassNotFoundException localClassNotFoundException)
    {
      throw new NoClassDefFoundError(localClassNotFoundException.getMessage());
    }
  }

  static class MyDemoPanel extends DemoPanel
  implements ActionListener
  {
    private TimeSeries series;
    private double lastValue = 100.0D;

    public MyDemoPanel()
    {
      super(new BorderLayout());
      this.series = new TimeSeries("Random Data", DynamicDataDemo1.class$org$jfree$data$time$Millisecond);
      TimeSeriesCollection localTimeSeriesCollection = new TimeSeriesCollection(this.series);
      ChartPanel localChartPanel = new ChartPanel(createChart(localTimeSeriesCollection));
      localChartPanel.setPreferredSize(new Dimension(500, 270));
      addChart(localChartPanel.getChart());
      JPanel localJPanel = new JPanel();
      localJPanel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
      JButton localJButton = new JButton("Add New Data Item");
      localJButton.setActionCommand("ADD_DATA");
      localJButton.addActionListener(this);
      localJPanel.add(localJButton);
      add(localChartPanel);
      add(localJPanel, "South");
    }

    private JFreeChart createChart(XYDataset paramXYDataset)
    {
      JFreeChart localJFreeChart = ChartFactory.createTimeSeriesChart("Dynamic Data Demo", "Time", "Value", paramXYDataset, true, true, false);
      XYPlot localXYPlot = (XYPlot)localJFreeChart.getPlot();
      ValueAxis localValueAxis = localXYPlot.getDomainAxis();
      localValueAxis.setAutoRange(true);
      localValueAxis.setFixedAutoRange(60000.0D);
      localValueAxis = localXYPlot.getRangeAxis();
      localValueAxis.setRange(0D, 200.0D);
      return localJFreeChart;
    }

    public void actionPerformed(ActionEvent paramActionEvent)
    {
      if (paramActionEvent.getActionCommand().equals("ADD_DATA"))
      {
        double d = 0.90000000000000002D + 0.20000000000000001D * Math.random();
        this.lastValue *= d;
        Millisecond localMillisecond = new Millisecond();
        System.out.println("Now = " + localMillisecond.toString());
        this.series.add(new Millisecond(), this.lastValue);
      }
    }
  }
}