,在Applet中生成一个蓝色的反弹球。该球用一个mousePressed事件初始化。当球碰到Applet边框时,它应该被弹起并...·编写一个JAVA Application程序-In the Applet to generate a blue ball rebound. The ball is initialized with a mousePressed event. When the ball touched Applet borders, it should be up and ...