lnxjx
发贴: 2
积分: 0
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于 2005-10-17 19:06
我想实现一个矩形在一个随机的位置由小变到大,再消失,大家帮我看看
import java.awt.*; import java.applet.*;
public class RadomThread extends Applet implements Runnable { Thread t; int x,y,w,h,s;
public void init() { w=getSize().width; h=getSize().height; t=new Thread(this); t.start(); } public void paint(Graphics g) { int cout=0; while(cout<3) { g.clearRect(0,0,w,h); g.setColor(Color.green); g.drawRect(x,y,s,s); x=x-10;y=y-20;s=s+10; cout++; } } public void run() { while(true) { x=(int)(Math.random()*w); y=(int)(Math.random()*h); s=(int)(Math.random()*100); repaint(); try { Thread.sleep(1000); } catch(Exception e){} } } public static void main(String args[]) { new RadomThread(); } }
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