DynamicDataDemo2 rewrite in jfreechart-fx can not run stable

[kaonick]

You can test my code below ,after run maybe 5 mins data still run but the ui shutdown.

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.fx.ChartViewer;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.DefaultXYItemRenderer;
import org.jfree.data.time.*;
import org.jfree.data.xy.XYDataset;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;

/**
 * A demo showing the display of JFreeChart within a JavaFX application.
 * 
 * The ChartCanvas code is based on: 
 * http://dlemmermann.wordpress.com/2014/04/10/javafx-tip-1-resizable-canvas/
 * 
 */
public class DynamicTimeSeriesChartFXDemo2 extends Application {

    /**
     * Creates a chart.
     *
     *
     * @return A chart.
     */
    private static JFreeChart createChart() {

        final TimeSeriesCollection dataset1 = new TimeSeriesCollection(series1);
        final TimeSeriesCollection dataset2 = new TimeSeriesCollection(series2);
        final JFreeChart chart = ChartFactory.createTimeSeriesChart(
                "Dynamic Data Demo 2", "Time", "Value", dataset1, true, true, false
        );
        chart.setBackgroundPaint(Color.white);

        final XYPlot plot = chart.getXYPlot();
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);
        //      plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 4, 4, 4, 4));
        final ValueAxis axis = plot.getDomainAxis();
        axis.setAutoRange(true);
        axis.setFixedAutoRange(60000.0);  // 60 seconds

        plot.setDataset(1, dataset2);
        final NumberAxis rangeAxis2 = new NumberAxis("Range Axis 2");
        rangeAxis2.setAutoRangeIncludesZero(false);
        plot.setRenderer(1, new DefaultXYItemRenderer());
        plot.setRangeAxis(1, rangeAxis2);
        plot.mapDatasetToRangeAxis(1, 1);

        return chart;
    }

    /**
     * Creates a dataset, consisting of two series of monthly data.
     *
     * @return the dataset.
     */


    private static TimeSeries series1;
    private static TimeSeries series2;
    private static double lastValue1 = 100.0;
    private static double lastValue2 = 500.0;


    private static void createDataset() {

        series1 = new TimeSeries("Random 1");//, Millisecond.class
        series2 = new TimeSeries("Random 2");//, Millisecond.class

    }




    private Timer timer;
    private static final int FAST = 500;

    @Override 
    public void start(Stage stage) throws Exception {
        createDataset();
        JFreeChart chart = createChart();
        ChartViewer viewer = new ChartViewer(chart);

        timer = new Timer(FAST, new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                double factor = 0.90 + 0.2 * Math.random();
                lastValue1 = lastValue1 * factor;
                Millisecond now = new Millisecond();
                System.out.println("Now = " + now.toString());
                series1.add(new Millisecond(), lastValue1);


                factor = 0.90 + 0.2 * Math.random();
                lastValue2 = lastValue2 * factor;
                now = new Millisecond();
                System.out.println("Now = " + now.toString());
                series2.add(new Millisecond(), lastValue2);
            }
        });

        stage.setScene(new Scene(viewer)); 
        stage.setTitle("JFreeChart: TimeSeriesFXDemo1.java"); 
        stage.setWidth(700);
        stage.setHeight(390);
        stage.show();

        timer.start();
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
  
}