Java实现动态进度条示例

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
public class ProgressBar extends Thread implements ActionListener{
        JProgressBar jpb=new JProgressBar();
        JLabel jl=new JLabel();
        public void actionPerformed(ActionEvent e) {
                start();
        }
        public void run(){
                for(int i=0;i<=100;i++){
                jpb.setValue(i);
                jpb.setStringPainted(true);
                String per=(int)(jpb.getPercentComplete()*100)+"%";
                jl.setText(per);
                        try{
                                Thread.sleep(100);
                        }catch(Exception ee){
                                ee.printStackTrace();
                        }
                }
        
        }