学习java时所做实验的全部代码，包括applet和用户应用程序。程序代码有画图形的，（五角星，多边形，圆等等）有求最大公约数，最小公倍数的，还有很多其他的-Experimental study made when all the java code, including the applet and the user applications. Picture in graphics code, (five-pointed star, polygon, circle, etc.) are se