该源代码是一个简单的画图板的java实现。画图板的应用简单灵巧，其占用资源少、操作简单；可以实现一些简单的画图应用操作。其功能较少但是可以为用户的小型图形应用工作带来了很多便利。能实现简单的作图如：画直线、曲线、椭圆、矩形等；也可以实现图像保存、打开、选择颜色等功能。,The source code is a java implementation of a simple drawing board. Drawing board application is simple and smart, less resource, simple operation　simple drawing application operation can be achieved. Fewer features but you can bring a lot of convenience for small graphics applications work. To achieve a simple plot: draw a straight line, curve, ellipse, rectangle　You can also save images to open, choose colors and functions.