本文讲述一个画图板应用程序的设计，屏幕抓图如下。这篇文章带有三个附件，其中两个jar文件都是j2sdk1.4.2_08编译打包，包含源代码，可执行-This paper describes the application of a drawing board design, screen shot below. Article with three attachments, two of which are j2sdk1.4.2_08 jar files compiled package, in