java 按钮控制动态曲线图进行 可是暂停按钮为什么没用

[qq_40804544]

第二张图是第一张图点了运行后曲线会自动生成，可是再点暂停按钮却没用

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.FlowLayout;
public class 说明 {

    JFrame frame;
    private JTextField txtlogo;
    private JTextField textField;
    private JTextField textField_1;
    private JTextField textField_2;
    private DySwingChart panel1;


    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    说明 window = new 说明();
                    window.frame.setVisible(true);


                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }


    public 说明() {
        initialize();
//		MyThread mythread = new MyThread();
//		mythread.start();
    }


    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        txtlogo = new JTextField();
        txtlogo.setText("说明及LOGO");
        txtlogo.setBounds(6, 6, 97, 26);
        frame.getContentPane().add(txtlogo);
        txtlogo.setColumns(10);

        JButton button = new JButton("运行");
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                MyThread mythread = new MyThread();
                mythread.start();
                String Btn = button.getText();
                if(Btn.equals("暂停"))
                {
                    mythread.toSuspend();
                    button.setText("继续");
                }else{
                    mythread.toResume();
                    button.setText("暂停");
                }
            }
        });
        button.setBounds(302, 6, 117, 29);
        frame.getContentPane().add(button);

        textField_1 = new JTextField();
        textField_1.setText("操作说明");
        textField_1.setBounds(301, 84, 130, 159);
        frame.getContentPane().add(textField_1);
        textField_1.setColumns(10);

        panel1=new DySwingChart();
        panel1.chartPanel.setBounds(6,46,251,211);
        frame.getContentPane().add(panel1.chartPanel);

        JButton button_1 = new JButton("返回");
        button_1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                frame.setVisible(false);
                UI window = new UI();
                window.frame.setVisible(true);
                frame.dispose();
            }
        });
        button_1.setBounds(302, 243, 117, 29);
        frame.getContentPane().add(button_1);

        JButton button_3 = new JButton("结束");
        button_3.setBounds(302, 57, 117, 29);
        frame.getContentPane().add(button_3);

        JLabel label = new JLabel("速率：");
        label.setBounds(115, 11, 39, 16);
        frame.getContentPane().add(label);

        textField = new JTextField();
        textField.setBounds(151, 6, 106, 26);
        frame.getContentPane().add(textField);
        textField.setColumns(10);



    }

    class MyThread extends Thread{

        private boolean suspend = false;

        public synchronized void toSuspend(){
            suspend = true;
        }

        public synchronized void toResume(){
            notify();//当前等待的线程继续执行
            suspend = false;
        }

        public void run() {
            int i=0;
            while (true) {
//                synchronized (this) {
//                    while(suspend){
//                        try {
//                            wait();//让线程进入等待状态
//                        } catch (InterruptedException e) {
//                            // TODO Auto-generated catch block
//                            e.printStackTrace();
//                        }
//                    }
//                }

                double factor=-500 + 1000 * Math.random();
                DySwingChart.xyseries.add(i, factor);
                try {
                    Thread.currentThread();
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                i++;
            }
        }
    }

}

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import java.awt.GridLayout;
import java.awt.Window;
import javax.swing.JTextArea;
import javax.swing.JTextPane;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.SwingConstants;
import java.awt.Color;
import javax.swing.JTextField;

public class UI {

    JFrame frame;
    private JTextField txtlogo;


    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    UI window = new UI();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }


    public UI() {
        initialize();
    }


    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(new GridLayout(0, 1, 0, 0));

        JPanel panel = new JPanel();
        frame.getContentPane().add(panel);
        panel.setLayout(null);

        JTextArea textArea = new JTextArea();
        textArea.setBounds(126, 11, 0, 16);
        panel.add(textArea);

        JButton btnNewButton_1 = new JButton("平衡模式");
        btnNewButton_1.setBounds(169, 95, 96, 29);
        btnNewButton_1.setBackground(Color.WHITE);
        btnNewButton_1.setForeground(Color.DARK_GRAY);
        btnNewButton_1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
            }
        });
        panel.add(btnNewButton_1);

        JButton btnNewButton = new JButton("监测模式");
        btnNewButton.setBounds(169, 136, 96, 29);
        btnNewButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                frame.setVisible(false);
                说明 window1 = new 说明();
                window1.frame.setVisible(true);
                frame.dispose();
            }
        });
        panel.add(btnNewButton);

        JButton button = new JButton("说明及版本号");
        button.setBounds(161, 243, 117, 29);
        panel.add(button);

        JLabel lbllogo = new JLabel("产品名称及LOGO");
        lbllogo.setBounds(161, 26, 109, 48);
        panel.add(lbllogo);
    }
}

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.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.RefineryUtilities;
public class DySwingChart extends JComponent {

    private static final long serialVersionUID = 4540402465397663673L;
    public JPanel chartPanel;
    public DySwingChart() {
        super();
        //setContentPane();
        chartPanel = createDemoPanel();

    }
    public static XYSeries xyseries;
    public XYSeriesCollection createDataset1() {
        xyseries = new XYSeries("折线图");
        XYSeriesCollection xyseriescollection = new XYSeriesCollection();
        xyseriescollection.addSeries(xyseries);
        return xyseriescollection;
    }
    public  JFreeChart createChart() {
        XYDataset xydataset = createDataset1();
        JFreeChart jfreechart = ChartFactory.createXYLineChart(
                "变化", "时间", "值", xydataset,
                PlotOrientation.VERTICAL, false, true, false);
        XYPlot xyplot = (XYPlot) jfreechart.getPlot();
        NumberAxis numberaxis = (NumberAxis) xyplot.getRangeAxis();
        numberaxis.setAutoRangeIncludesZero(true);
        NumberAxis x=(NumberAxis)xyplot.getDomainAxis();
        x.setLabel("时间");
        x.setAutoRange(true);
        return jfreechart;
    }
    public  void dynamicRun() {
        int i=0;
        while (true) {

            double factor=-500 + 1000 * Math.random();
            xyseries.add(i, factor);
            try {
                Thread.currentThread();
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            i++;
        }
    }
    public  JPanel createDemoPanel() {
        JFreeChart jfreechart = createChart();
        return new ChartPanel(jfreechart);
    }

//    public static void main(String args[]) {
//        JFrame.setDefaultLookAndFeelDecorated(true);
//        DySwingChart annotationdemo2 = new DySwingChart(
//                "动态折线图");
//        annotationdemo2.pack();
//        annotationdemo2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//        RefineryUtilities.centerFrameOnScreen(annotationdemo2);
//        annotationdemo2.setVisible(true);
//        annotationdemo2.dynamicRun();
//    }