thread7.java

java关于线程的一些实例

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

public class Thread7 extends Applet implements Runnable{
	Thread left,right;
	Graphics mypen;
	int x,y;
	public void init(){
		left=new Thread(this);
		right=new Thread(this);
		x=10;
		y=10;
		mypen=getGraphics();
	}
	public void start(){
		left.start();
		right.start();
	}
	public void run(){
		while(true){
			if(Thread.currentThread()==left){
				x=x+1;
				if(x>240)x=10;
				mypen.setColor(Color.blue);
				mypen.clearRect(10,10,300,40);
				mypen.drawRect(10+x,10,40,40);
				try{
					left.sleep(60);
				}catch(InterruptedException e){}
			}
			else if(Thread.currentThread()==right){
				y=y+1;
				if(y>240)y=10;
				mypen.setColor(Color.red);
				mypen.clearRect(10,90,300,40);
				mypen.drawOval(10+y,90,40,40);
				try{
					right.sleep(60);
				}catch(InterruptedException e){}
			}
		}
	}
	public void stop(){
		left=null;right=null;
	}

}