利用java.awt.Graphics2D类绘制各种图形，矩形，圆，二次曲线，饼形以及它们的填充图形等-use java.awt.Graphics2D draw various types of graphics, rectangle, circle, conic, pie-shaped and filled their graphics

一个简单的Java画图程序，能画直线、椭圆和矩形，单击鼠标既可操作。-a simple Java drawing, and painting can be straight, oval and rectangle, click of the mouse can operate.

一个简单的java桌面程序，利用java的GDI函数编写的简单的画图板程序，包括画矩形、椭圆、直线、点、文字-a simple java desktop procedures, java using the GDI prepared by the simple drawing board procedures, including painting rectangle, oval, line, point, the text