createblock.txt

随机生成彩色小圆点

import java.util.Random;
import java.util.TimerTask;


public class CreateBlock extends TimerTask{
	Random r1,r2,r3,r4;
	TimerCanvas tc;
	public CreateBlock(TimerCanvas t){
		r1=new Random();
		r2=new Random();
		r3=new Random();
		r4=new Random();
		tc=t;
	}
  public void run(){
	  Block b=new Block();
	  b.x=Math.abs(r1.nextInt())%tc.getWidth();
	  b.y=Math.abs(r2.nextInt())%tc.getHeight();
	  b.w=Math.abs(r3.nextInt())%15;
	  b.h=Math.abs(r4.nextInt())%10;
	  tc.addBlock(b);
	  //
	  tc.repaint();
  }
}