event12_4.java

来自「很有用的课件」· Java 代码 · 共 46 行

 /**
  * ClassName: Event12_4.class
  * Description:
  * Copyright:    Copyright (c) 2002
  * Company: 中国青年出版社
  * @author: Hong Yi
  * @version 1.0
  */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class MyAdapter extends WindowAdapter
	//从WindowAdapter中派生的类
{
	public void windowClosing(WindowEvent e)
	{  System.exit(0);
	}
}

class MyFrame extends JFrame
{
	public MyFrame()
    {
	    setTitle("事件示例程序12.4");
        setSize(300, 200);
        setLocation(100,100);
        myAdapter = new MyAdapter();

        //增加窗口事件监听器
        addWindowListener(myAdapter);
   }

   private MyAdapter myAdapter;
}

public class Event12_4
{
   public static void main(String[] args)
   {
	  JFrame frame = new MyFrame();
      frame.setVisible(true);
   }
}