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    1. package book.io;  
   2.  
   3. import java.io.File;  
   4.  
   5. /** 
   6.  *  
   7.  * @author XWZ 
   8.  * 2007-11-27 
   9.  * ɾ³ýÎļþ»òĿ¼ 
  10.  */ 
  11. public class DeleteFileUtil {  
  12.     /** 
  13.      * ɾ³ýÎļþ£¬¿ÉÒÔÊǵ¥¸öÎļþ»òÎļþ¼Ð 
  14.      * @param   fileName    ´ýɾ³ýµÄÎļþÃû 
  15.      * @return Îļþɾ³ý³É¹¦·µ»Øtrue,·ñÔò·µ»Øfalse 
  16.      */ 
  17.     public static boolean delete(String fileName){  
  18.         File file = new File(fileName);  
  19.         if(!file.exists()){  
  20.             System.out.println("ɾ³ýÎļþʧ°Ü£º"+fileName+"Îļþ²»´æÔÚ");  
  21.             return false;  
  22.         }else{  
  23.             if(file.isFile()){  
  24.                   
  25.                 return deleteFile(fileName);  
  26.             }else{  
  27.  &nb


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/************Student.java begin***************/
 import java.util.ArrayList;
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import java.util.List;
public class Student {
 private String name;
 private String password;
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 /**
* @(#)MyTray.java
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* @author Xie Xiaojin
* @version 1.00 2009/11/9
*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MyTray implements ActionListener {
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