Java绘图：绘制虚线与实线
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
- 2022-01-28 07:52:17下载
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