JFreeChart动态仪表盘的问题

用JFreeChart写了个仪表盘但是是静态的怎么使其指针动起来，在线等，求详细代码
public class Dial extends ApplicationFrame {

public Dial(String title) {
super(title);
JPanel chartPanel = createDemoPanel();
        chartPanel.setPreferredSize(new Dimension(1200, 400));
        setContentPane(chartPanel);
}

public static void main(String[] args) {
        Dial demo = new Dial("三个仪表");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);
    }

public static JPanel createDemoPanel() {
        JPanel panel = new JPanel(new GridLayout(1, 3));
        JPanel panel1 = new ChartPanel(createChart("第一个仪表"));
        JPanel panel2 = new ChartPanel(createChart("第二个仪表"));
        JPanel panel3 = new ChartPanel(createChart("第三个仪表"));
        panel.add(panel1);
        panel.add(panel2);
        panel.add(panel3);
        return panel;
    }

private static JFreeChart createChart(String title) {
//设置指针数据
DefaultValueDataset dataset = new DefaultValueDataset();
        dataset.setValue((int)(Math.random()*60));  
        DefaultValueDataset dataset2 = new DefaultValueDataset();  
        dataset2.setValue((int)(Math.random()*100));
        //设置表框样式
StandardDialFrame dialFrame = new StandardDialFrame();  
        dialFrame.setBackgroundPaint(Color.lightGray);  
        dialFrame.setForegroundPaint(Color.darkGray);
        //设置表背景颜色
        GradientPaint gradientpaint = new GradientPaint(new Point(), new Color(  
                255, 255, 255), new Point(), new Color(170, 170, 220));  
        DialBackground dialbackground = new DialBackground(gradientpaint);  
        dialbackground  
                .setGradientPaintTransformer(new StandardGradientPaintTransformer(  
                        GradientPaintTransformType.VERTICAL));  
        //设置表中文本样式
        DialTextAnnotation dialtextannotation = new DialTextAnnotation("km/h");  
        dialtextannotation.setFont(new Font("Dialog", 1, 14));  
        dialtextannotation.setRadius(0.69999999999999996D); 
        //将指针指向的数值用文本显示出来
        DialValueIndicator dvi = new DialValueIndicator(0);  
        dvi.setFont(new Font("Dialog", Font.PLAIN, 10));  
        dvi.setOutlinePaint(Color.darkGray);  
        dvi.setRadius(0.60);  
        dvi.setAngle(-103.0);  
        DialValueIndicator dvi2 = new DialValueIndicator(1);  
        dvi2.setFont(new Font("Dialog", Font.PLAIN, 10));  
        dvi2.setOutlinePaint(Color.red);  
        dvi2.setRadius(0.60);  
        dvi2.setAngle(-77.0);  
        //绘制刻度
        StandardDialScale dialScale1 = new StandardDialScale();  
        dialScale1.setLowerBound(-40D); // 最底表盘刻度  
        dialScale1.setUpperBound(60D); // 最高表盘刻度  
        dialScale1.setStartAngle(-120D); // 弧度为120,刚好与人的正常视觉对齐  
        dialScale1.setExtent(-300D); // 弧度为300,刚好与人的正常视觉对齐  
        dialScale1.setTickRadius(0.88D); // 值越大,与刻度盘框架边缘越近  
        dialScale1.setTickLabelOffset(0.14999999999999999D); // 值越大,与刻度盘刻度越远0  
        dialScale1.setTickLabelFont(new Font("Dialog", 0, 14)); // 刻度盘刻度字体  
        StandardDialScale dialScale2 = new StandardDialScale();
        dialScale2.setLowerBound(0D);  
        dialScale2.setUpperBound(100D);  
        dialScale2.setStartAngle(-120D);  
        dialScale2.setExtent(-300D);  
        dialScale2.setTickRadius(0.52D);  
        dialScale2.setTickLabelOffset(0.1D);  
        dialScale2.setTickLabelFont(new Font("Dialog", 0, 10));  //设置刻度盘字体类型  
        dialScale2.setMinorTickPaint(new Color(255,0,0));  //设置刻度盘小刻度颜色为red  
        dialScale2.setMajorTickPaint(new Color(255,0,0));  //设置刻度盘大刻度颜色为red  
        //绘制指针
        Pointer pointer = new Pointer(0); // 内部内  
        Pin pin = new Pin(1);  
        pin.setPaint(new GradientPaint(new Point(), new Color(255, 0, 0),  
                new Point(), new Color(170, 170, 220)));   //设置指针样式  
        pin.setRadius(0.50);   //设置指针半径,也就是指针长短  
        //绘制表盘心
        DialCap dialcap = new DialCap();  
        dialcap.setRadius(0.0700000000000001D);// 0.10000000000000001D  
        
        
        //创建表
        DialPlot dialplot = new DialPlot();  
        dialplot.setView(0.0D, 0.0D, 1.0D, 1.0D);  
        dialplot.setDataset(0, dataset);  
        dialplot.setDataset(1, dataset2);
        dialplot.setDialFrame(dialFrame);
        dialplot.setBackground(dialbackground);
        dialplot.addLayer(dialtextannotation);
        dialplot.addLayer(dvi);  
        dialplot.addLayer(dvi2);
        dialplot.addScale(0, dialScale1);
        dialplot.addScale(1, dialScale2);
        dialplot.addPointer(pointer); // addLayer(pointer);  
        dialplot.mapDatasetToScale(0, 0);   //Scale与Dataset对应  
        dialplot.addPointer(pin);     
        dialplot.mapDatasetToScale(1, 1);   //Scale与Dataset对应
        dialplot.setCap(dialcap);
        
        JFreeChart chart = new JFreeChart(title, 
                JFreeChart.DEFAULT_TITLE_FONT, dialplot, true);
        
        return chart;
    }
} jfreechart java --------------------编程问答-------------------- JFreeChart不太了解，关注一下 --------------------编程问答-------------------- JFreeChart 生成的图表是png或JPEG格式的图片，没有动态的

补充：Java ,  Java相关