利用线程来处理java中进度条动态改…

//继承JProgressBar类

import javax.swing.*;

import java.awt.*;
import java.awt.event.*;

import javax.swing.border.*;

public class OAGProgressBar extends JProgressBar{
  
    int value =0;
    private  int count = 0;
    private static long total = 100;
    boolean ischanged=true;
    static boolean isCompleted=true;
   
    public OAGProgressBar(){
        this.setForeground(SystemColor.inactiveCaption);
        this.setBorder(BorderFactory.createEtchedBorder(EtchedBorder.RAISED));
        this.setOrientation(JProgressBar.HORIZONTAL);
        this.setBorderPainted(true);
        this.setMinimum(0);
        this.setMaximum(100);
      
        //定义两个线程完成相应的工作
       
    }
   
   
    //--------------------------------------------------
     
     public void setAtribute(){
     
     }
    //--------------------------------------------------
    public void runWork(){
       
        if(!isCompleted) {
            JOptionPane.showMessageDialog(null,"正在工作请稍候！","提示",JOptionPane.INFORMATION_MESSAGE);
            return;
        }
       
        ischanged=true;
        count=0;
       
        isCompleted=false;
       
       
       
        Runnable runA = new Runnable(){
            public void run(){
                try{
                    //oth.setProgressBarValue();
                    setProgressBarValue();
                }catch(InterruptedException e){
                   
                }
            }
        }; //end runA
       
       
        Runnable runB = new Runnable(){
            public void run(){
                try{
                   // oth.insertOAGData(total);
                    insertOAGData(100);
                }catch(InterruptedException e){
                   
                }
            }
        }; //end runA
       

        Thread ta = new Thread(runA,"ThreadA");
        Thread tb = new Thread(runB,"ThreadB");
      
        tb.start();

        ta.start();

    }
   
    public synchronized void setProgressBarValue()
    throws InterruptedException
    {
       //count < total&&
        while(  !isCompleted){
            while(!ischanged){
                System.out.println("setProgressBarValue--wait   " + count);
                wait();
            }
            System.out.println("setProgressBarValue----getValue: "+count+" --runing   "+ isCompleted);
            setValue(count);
            ischanged = false;
            notifyAll();
     }
        System.out.println("setProgressBarValue--Completed!  "+ isCompleted);
        if(count>=total){
           
            ischanged=false;
            isCompleted = true;
            System.out.println("setProgressBarValue--Completed!");
            notifyAll();
        }
    }
    public synchronized void insertOAGData(long n)
    throws InterruptedException
    {
        long i=0;
   
          while(i<n && !isCompleted) 
          {
                while(ischanged){
                    System.out.println("insertOAGData--waiting    "+i);
                    wait();
                }
                i++;
                System.out.println("insertOAGData--running +  "+ i);
                Thread.sleep(50);
                count++;
                ischanged = true;
                notifyAll();
           }
          System.out.println("insertOAGData--Completed!");
          if(i>=n){
              isCompleted = true;
              ischanged = true;
              System.out.println("insertOAGData--Completed!");
             notifyAll();
          }
    }

}

//主类调用OAGProgressBar 动态显示

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;

 class ProgressBarDemo implements ActionListener,ChangeListener
{
    JFrame f = null;
    OAGProgressBar progressbar;
    JLabel label;
    Timer timer;
    JButton b;

    public ProgressBarDemo()
    {
        f = new JFrame("progressbar Example");
        Container contentPane = f.getContentPane();
        label = new JLabel(" ",JLabel.CENTER);
        progressbar = new OAGProgressBar();
        progressbar.setValue(0);
        progressbar.addChangeListener(this);
        progressbar.setPreferredSize(new Dimension(800,20));
        JPanel panel = new JPanel();
        b = new JButton("Start");
        b.setForeground(Color.orange);
        b.addActionListener(this);
        panel.add(b);

        timer = new Timer(50,this);

        contentPane.add(panel,BorderLayout.NORTH);
        contentPane.add(progressbar,BorderLayout.CENTER);
        contentPane.add(label,BorderLayout.SOUTH);

        f.pack();
        f.setVisible(true);

        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

    public static void main(String[] args)
    {
        new ProgressBarDemo();
    }

    public void actionPerformed(ActionEvent e)
    {
        progressbar.setValue(0);
        progressbar.runWork();
 
    }

    public void stateChanged(ChangeEvent e1)
    {
        int value = progressbar.getValue();

        if(e1.getSource() == progressbar)
        {
            label.setText("目前已完成进度："+Integer.toString(value)+" %");
            label.setForeground(Color.blue);
        }
    }
}