midp2.0小游戏，人物行走，人物碰撞，还有背景图设等其他重要物体。-midp2.0 game, the characters walk, the characters collide, as well as other important background image-based objects.

该代码执行的结果是，能看到两个相同大小的球相碰后会改变颜色。每次碰后继续相碰，往返运动。-The results of the implementation of the code is the same size to see the two collide after the ball change color. Continue to collide after each collision, and from the movement.

java两个小球碰撞四周墙壁反弹 -java two small balls bounce around the walls collide