for (int k = 1; k <= 100; k++)
      {
         x1 = rnd.nextInt(340)+400;
         y1 = rnd.nextInt(240)+10;

         red = (rnd.nextInt(255)+1);
         green = (rnd.nextInt(255)+1);
         blue = (rnd.nextInt(255)+1);

         g.setColor(new Color(red,green,blue));
			g.fillRect(x1,y1,50,50);
      }