用java语言实现的在任意点画圆和画线的程序。可以选择圆的圆点和半径，可以选择线的粗细，起始终止坐标，实线虚线等。-Using java language in any point and drawing a line drawcircle procedures. Can choose a circle and the radius of dots, you can choose the line thickness, the initial termination of coordinates