Java绘图:绘制虚线与实线
代码说明:
Java绘图:绘制虚线与实线 public LineDemo(){ super("实线与虚线"); //调用父类构造函数 setSize(300,200); //设置窗口尺寸 setVisible(true); //设置窗口可视 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //关闭窗口时退出程序 } public void paint(Graphics g){ //绘制组件方法 Graphics2D g2=(Graphics2D)g; //得到2D图形 Dimension dim = this.getSize(); //得到组件尺寸 g2.setColor(Color.white); //设置绘制颜色为白色 g2.fillRect(0, 0, dim.width, dim.height); //填充整个组件 g2.setColor(Color.black); //设置绘制颜色 g2.drawLine(40,160,280,160); //绘制实线 g2.drawLine(40,160,40,40); g2.drawString("0",30,165); //绘制字符串 g2.drawString("100",16,50); g2.drawString("200",270,175); float[] dash={5,5}; //短划线图案 BasicStroke bs = new BasicStroke(1,BasicStroke.CAP_BUTT,BasicStroke.JOIN_MITER, 10.0f,dash,0.0f); //实例化新画刷 g2.setStroke(bs); //设置新的画刷 g2.drawLine(40,160,100,120); //用新的画刷绘制虚线
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