用Java实现小球碰壁反弹的简单实例(算法十分简单)

if(addX){	x+=3;}else{	x-=3;}				if(addY){	y+=6;}else{	y-=6;}if(x<=0||x>=(width-50)){	addX=!addX;}				if(y<=0||y>=(height-50)){	addY=!addY;}