新手关于窗口关闭的有关问题

新手关于窗口关闭的问题
我在DOS环境下运行如下一段代码

Java code

import java.awt.*;public class  test extends Frame{public static void main(String []args)  {        Frame f=new Frame("我的窗口");        f.setVisible(true);    }}

Java code

Frame f = new Frame("我的窗口");        f.setVisible(true);        f.addWindowListener(new WindowAdapter() {            @Override            public void windowClosing(WindowEvent e) {                System.exit(0);            }        });
[解决办法]
Frame f=new Frame("我的窗口");
f.setSize(new Dimension(100, 100));
       f.setVisible(true);
       f.addWindowListener(new WindowAdapter()
       {
           public void windowClosing(WindowEvent e)  
           {
               System.exit(0);
           }
       });
[解决办法]
记得 import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
[解决办法]

[解决办法]
Java code
import javax.swing.*;import java.awt.*;public class Test{    public static void main(String[] args)    {        JFrame myFrame = new JFrame("test");        // .......do whatever you are interest in        myFrame.setSize(800,640);        myFrame.setVisible(true);        myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    }}