frame3.java

Java课程中所有的可运行程序 全部都是java课程中所涉及到的源码

import java.awt.*;
import java.awt.event.*;

public class Frame3 extends Frame{
public Frame3(String ss){
    super(ss);
    setSize(200,200);
    setVisible(true);
    }

public void paint(Graphics g)
{ super.paint(g);
g.setColor(Color.blue);
g.drawLine(50,50,120,120);
 }


public static void main(String args[]) {
        Frame3 nowFrame=new Frame3("Frame3");
         nowFrame.addWindowListener(new WindowAdapter(){
   public void windowClosing(WindowEvent e){
    System.exit(0);
         }
  });

    }
}