mydrawline1.java

这个是JAVA程序基础书上第7章书实现的代码

import java.awt.*;

class MyDrawLine1{
	 Frame f;
	MyDrawLine1(){
		f = new Frame("画线段程序举例!");
		f.setLayout(new BorderLayout());
		f.add(new Lines(), BorderLayout.CENTER);
	}
    Frame getFrame(){
    	return f;
    }
	public static void main(String[] args){
		MyDrawLine1 d = new MyDrawLine1();

		d.getFrame().setSize(400, 200);
		d.getFrame().show();
	}
	class Lines extends Panel{
		public Lines(){
			
		}
		public void paint(Graphics g){
			g.setColor(Color.red);
			g.drawLine(20, 20, 350, 160);
			g.drawLine(100, 100, 100, 100);
		}
	}
}