pb.java

java进度条的小程序

import java.awt.*;
import javax.swing.JProgressBar;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.event.*;
import javax.swing.*;


public class Pb extends JProgressBar

{  
	 JButton startButton=new JButton("Start");
	 private Timer timer;
	 private Baction baction;
	 private Taction taction;
	 boolean isstarted=false;
	 boolean isfinished=false;
	 public final static int ONE_SECOND=1000;
 	 private int BAR_LENGTH;
	 public  Pb(int min, int max)
	 {  
	 		super(min,max);
	 	 startButton.addActionListener(baction);
	 		BAR_LENGTH=max;
	 		setBackground (Color.white);
   		setForeground (Color.blue);
   		setBorderPainted(true);
   		setString("ARM is Ayalysing,please wait...");
   		 taction=new Taction();
   		 timer=new Timer(ONE_SECOND,taction);
   		setStringPainted(true);
 	 }
 	
	  public void hasFinished()
	 {
			isfinished=true;
	 }
	  class Taction implements ActionListener
	  {
   	   public void actionPerformed(ActionEvent e)
   	   { 
   	   		if(isfinished)
   	   		{
   	   	 		Pb.this.timer.stop();
   	   	 		Pb.this.setIndeterminate(false);
		     		Pb.this.setString("Analyse Finished");
		      	Pb.this.setValue(BAR_LENGTH);
		      	isfinished=false;
		      	Pb.this.repaint();
		    	}
   	   }
		 }
		class Baction implements ActionListener
{
	
	public void actionPerformed(ActionEvent e)
 	 		{
 	 			//if(!Pb.this.isstarted)
 	 			//{
 	 			
   		  Pb.this.setIndeterminate(true);
   		 Pb.this.setString("ARM is Ayalysing,please wait...");
   		  Pb.this.timer.start();
   		  Pb.this.isstarted=true;
   		  Pb.this.setStringPainted(true);
   		  //Pb.this.repaint();
   		//}
 	 		}
}
	public static void main(String args[])
	{JPanel pane = new JPanel();
		FlowLayout lm = new FlowLayout(FlowLayout.LEFT);
		pane.setLayout(lm);
		
		JFrame jf = new JFrame("Progressbar");
		jf.setSize(500,100);
	//	jf.setVisible(true);
		jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Pb pbar=new Pb(0,500);
	  //pbar.startButton.addActionListener(pbar.baction);
		pane.add(pbar);
		pane.add(pbar.startButton);
		jf.setContentPane(pane);
		//pane.setVisible(true);
		jf.setVisible(true);
	while(!pbar.isstarted)
	{
		try{java.lang.Thread.sleep(1000);}
    catch(Exception e){;}
    //jf.setVisible(true);
	}

		try{java.lang.Thread.sleep(3000);}
      	catch(Exception e){;}
     pbar.hasFinished();
	}
}
//class StartButton extends