图形按钮。本案例是一个用Java Applet实现页面响应鼠标时间的例子。实现了鼠标移动、移出、点击事件的相应功能。-Graphics button. This case is a Java Applet with the realization of the page in response to examples of the timing of the mouse. Achieved a mouse, out, click on the corresponding function of