jlab0903.java

java教程中的编程实例

import java.applet.Applet;
import java.awt.Graphics;
public class JLab0903 extends Applet{
       private String s="";
       private int x1,x2;
       private int y1,y2;
       public void init(){
          s= getParameter("vstring");
          x1= Integer.parseInt(getParameter("x1"));
          x2= Integer.parseInt(getParameter("x2"));
          y1= Integer.parseInt(getParameter("y1"));
          y2= Integer.parseInt(getParameter("y2"));
                  }
        public void paint(Graphics g){
             if(s!=null){
                  g.drawLine(x1,y1,x2,y2);
                    }
                 }
}