org.jfree.chart.demo.DynamicDataDemo1.java Source code

Introduction

Here is the source code for org.jfree.chart.demo.DynamicDataDemo1.java

Source

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.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 {
    private static final long serialVersionUID = 1L;

    static class DemoPanel extends JPanel implements ActionListener {

        private static final long serialVersionUID = 1L;

        private JFreeChart createChart(XYDataset xydataset) {
            JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("Dynamic Data Demo", "Time", "Value",
                    xydataset, true, true, false);
            XYPlot xyplot = (XYPlot) jfreechart.getPlot();
            ValueAxis valueaxis = xyplot.getDomainAxis();
            valueaxis.setAutoRange(true);
            valueaxis.setFixedAutoRange(60000D);
            valueaxis = xyplot.getRangeAxis();
            valueaxis.setRange(0.0D, 200D);
            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);
            }
        }

        private TimeSeries series;
        private double lastValue;

        public DemoPanel() {
            super(new BorderLayout());
            lastValue = 100D;
            series = new TimeSeries("Random Data");
            TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(series);
            ChartPanel chartpanel = new ChartPanel(createChart(timeseriescollection));
            chartpanel.setPreferredSize(new Dimension(500, 270));
            JPanel jpanel = new JPanel();
            jpanel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
            JButton jbutton = new JButton("Add New Data Item");
            jbutton.setActionCommand("ADD_DATA");
            jbutton.addActionListener(this);
            jpanel.add(jbutton);
            add(chartpanel);
            add(jpanel, "South");
        }
    }

    public DynamicDataDemo1(String s) {
        super(s);
        DemoPanel demopanel = new DemoPanel();
        setContentPane(demopanel);
    }

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

    public static void main(String args[]) {
        DynamicDataDemo1 dynamicdatademo1 = new DynamicDataDemo1("Dynamic Data Demo");
        dynamicdatademo1.pack();
        RefineryUtilities.centerFrameOnScreen(dynamicdatademo1);
        dynamicdatademo1.setVisible(true);
    }

}