高手来看下怎么错了？小第没分了

Question

窗口的关闭程序，我不知道两个程序是不是要分开写啊？我现在写到一快的，
顺便麻烦哪位大哥帮我在每行标上中文注释，我刚从书抄的，拜托了照顾下小第~~
package tiger;import java.awt.*;
import java.awt.event.*;public class TestFrame {
  public static void main(String args[]){
     Frame a=new Frame("IT人才交流网！");
     a.add(new Button("点击"));
     a.setSize(333,421);
     a.setVisible(true);
     a.addWindowListener(new MyWindowListener());
  }
}
class MyWindowListener implements WindowListener{
        public void windowsClosing(WindowEvent e){
        e.getWindow().setVisible(false);
        ((Window)e.getComponent()).dispose();   System.exit(0);        }
public void windowActivated(WindowEvent e){}//？？？？？？？？这6行什么意思？
public void windowClosed(WindowEvent e){}//  ？？？      
public void windowDeactivated(WindowEvent e){}//？？？
  public void windowDeiconified(WindowEvent e){}  //    ？？
 public void windowIconified(WindowEvent e){}     //？？  
 public void windowOpened(WindowEvent e){}       //？？？
        
        
        
}

Answer 1

public void windowActivated(WindowEvent e){}//动作监听
public void windowClosed(WindowEvent e){}//  调用关闭方法   
public void windowDeactivated(WindowEvent e){}//不调用动作监听
  public void windowDeiconified(WindowEvent e){}  //   还原窗口
 public void windowIconified(WindowEvent e){}     //调用窗口最小华方法
 public void windowOpened(WindowEvent e){}       //给第一次打开得窗口赋值