java 抗锯齿 drawLine

int bold = 5; 

((Graphics2D)g).setStroke(new BasicStroke(bold, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));   

//((Graphics2D)g).setStroke(new BasicStroke(bold, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND));   

//((Graphics2D)g).setStroke(new BasicStroke(bold));   

//((Graphics2D)g).setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);   

((Graphics2D)g).setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

然后我们再调用drawline方法就可以实现平滑的曲线了。粗糙的曲线也就消失了，ok搞定！

原文出处：http://hi.baidu.com/85mygod/blog/item/80c40883fb530db46c811956.html