Java图形的绘制与填充源码实例，这里主要是创建DrawPanel对象用于绘制图形，把对象drawPanel加入内容窗格，可以绘制的几何图形有：直线、矩形、圆角矩形、圆、椭圆、开虎弓形、饼形、三次曲线和二次曲线。编写过程中用到坐标编程的一些知识-The Java graphics rendering filling source code examples, mainly used to draw graphics to create DrawPanel object, add objects drawPanel to content pane, you can draw geometric shapes: lines, rectangles, rounded rectangles, circles, ellipses, open tiger bow pie cubic curve and secondary curve. Coordinates programming knowledge is used in the preparation process