Java tutorial
package org.jfree.chart.demo; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; 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 CloneTest1 extends ApplicationFrame implements ActionListener { private static final long serialVersionUID = 1L; public CloneTest1(String s) { super(s); lastValue = 100D; series = new TimeSeries("Random Data"); TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(series); JFreeChart jfreechart = createChart(timeseriescollection); JFreeChart jfreechart1 = null; try { jfreechart1 = (JFreeChart) jfreechart.clone(); } catch (Exception exception) { exception.printStackTrace(); } XYPlot xyplot = (XYPlot) jfreechart1.getPlot(); TimeSeriesCollection timeseriescollection1 = (TimeSeriesCollection) xyplot.getDataset(); series = timeseriescollection1.getSeries(0); ChartPanel chartpanel = new ChartPanel(jfreechart1); JButton jbutton = new JButton("Add New Data Item"); jbutton.setActionCommand("ADD_DATA"); jbutton.addActionListener(this); JPanel jpanel = new JPanel(new BorderLayout()); jpanel.add(chartpanel); jpanel.add(jbutton, "South"); chartpanel.setPreferredSize(new Dimension(500, 270)); setContentPane(jpanel); } private JFreeChart createChart(XYDataset xydataset) { JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("Clone Test 1", "Time", "Value", xydataset, true, true, false); XYPlot xyplot = (XYPlot) jfreechart.getPlot(); ValueAxis valueaxis = xyplot.getDomainAxis(); valueaxis.setAutoRange(true); valueaxis.setFixedAutoRange(60000D); return jfreechart; } public void actionPerformed(ActionEvent actionevent) { if (actionevent.getActionCommand().equals("ADD_DATA")) { double d = 0.90000000000000002D + 0.20000000000000001D * Math.random(); lastValue = lastValue * d; Millisecond millisecond = new Millisecond(); System.out.println("Now = " + millisecond.toString()); series.add(new Millisecond(), lastValue); } } public static void main(String args[]) { CloneTest1 clonetest1 = new CloneTest1("JFreeChart : Clone Test 1"); clonetest1.pack(); RefineryUtilities.centerFrameOnScreen(clonetest1); clonetest1.setVisible(true); } private TimeSeries series; private double lastValue; }