用JAVA实现动态画直线、圆和矩形，并有清除功能-Dynamic drawing a straight line with JAVA, round and rectangle, and a clearance

用java画动态图,包括圆,直线,矩形等,且图形是运动的-Draw dynamic diagram with java, including circular, linear, rectangular, etc., and the graphics are the sports

这是一个java事件处理机制的小程序，涉及到了事件处理、绘图、动态数组的使用等，完成的功能是左键画框，右键画圆，双击全部清除-This applet is a Java event handling mechanism, related to event handling, graphics, and the use of dynamic arrays, to complete the function is left-frame, right-circle, double-click the