java如何画虚线。

Question

Graphics没有这种方法
自己写个方法，在一条线上，画多个线段就是了

Answer 1

// draw dashed line
Graphics2D g2 = (Graphics2D) g;
BasicStroke dashed = new BasicStroke(1.0f, 
                                     BasicStroke.CAP_BUTT, 
                                     BasicStroke.JOIN_MITER, 
                                     10.0f, 
                                     10.0f,
                                     0.0f);
g2.setStroke(dashed);
g2.draw(new Line2D.Double(0, 0, 100, 100));