删除文件目录的Java类

import java.util.*;

public class File extends java.io.File {

    

     File(java.io.File file,String str){

         super(file,str);

     }

     File(String str1,String str2){

         super(str1,str2);

     }

     File(String str){

         super(str);

     }

     File(java.net.URI uri){

         super(uri);

     }

     public static void deleteDirs(java.io.File dir)throws Exception{

         m_root=dir;

         m_dirs= new ArrayList();

         if(!m_root.isDirectory()){

             throw new Exception("Exception:\""+m_root.toString()+"\" is not a director");

         }

         else{

             for(int i=0;i<m_dirs.size();i++){

                 System.out.println(((File)m_dirs.get(i)).toString());

             }

             //delete all director

             try{

                 m_dirs.add(m_root);

                 myDelete();

             }

             catch(Exception e){

                 e.printStackTrace();

             }   

         }   

     }

     /**

      *

      * @param dirPath   String a director file path;

      * @throws IOException if dirPath is not a director file path

      */

     public static void deleteDirs(String dirPath)throws Exception{

         m_root=new java.io.File(dirPath);

         deleteDirs(m_root);

     }

    

     public static void deleteSubDirs(String dirPath)throws Exception{

         m_root=new java.io.File(dirPath);

         deleteSubDirs(m_root);    

     }

    

    

     public static void deleteSubDirs(java.io.File dir)throws Exception{

         m_root=dir;

         m_dirs= new ArrayList();

         //deleteDirs(m_root);

         if(!m_root.isDirectory()){

             throw new Exception("Exception:\""+m_root.toString()+"\" is not a director");

         }

        

         else{

             for(int i=0;i<m_dirs.size();i++){

                 System.out.println(((File)m_dirs.get(i)).toString());

             }

             try{

                 myDelete();

            }

            catch(Exception e){

                    e.printStackTrace();

            }

            }    

     }

     /*

      *   visit all a director and save them in a list

      */

     private static void visitAll(java.io.File tempRoot){

         //m_dirs.add(tempRoot);

         //System.out.println("函数开始处："+m_dirs.size());

        

         java.io.File[] dirs=tempRoot.listFiles();

         if(dirs!=null){

        

         List dirsList=Arrays.asList(dirs);

         //while(dirsList!=null){

             if(dirsList==null){

                 try{

                     tempRoot.delete();

                 }

                 catch(Exception e){

                     e.printStackTrace();

                 }

}

             else{

                

                 m_dirs.addAll(dirsList);    

                 //System.out.println(m_dirs.size());

                 /*

                 for(int i=0;i<dirs.length;i++){//print dirs

                     System.out.println("NO."+ ++counter+":"+dirs[i].toString());

                 }

                 */

                 //System.out.println(m_dirs.size());

                

                 for(int i=0;i<dirsList.size();i++){

                     tempRoot=(java.io.File)dirsList.get(i);

                     visitAll(tempRoot);

                     /*

                     dirs=tempRoot.listFiles();

                     List dirsList= Arrays.asList(dirs);

                     */

                     //System.out.println(tempRoot.toString());

                 }   

             }

             //return true;

         //}

         }

     }

     /*

      * do delete

      */

     private static void myDelete()throws Exception{

         //m_dirs.add(m_root);

         visitAll(m_root);

        

         if(m_dirs!=null){

            

             //System.out.println("删除前:"+m_dirs.size());

             //System.out.println(m_dirs.size());

             for(int i=m_dirs.size()-1;i>=0;i--){

                 java.io.File f= (java.io.File)m_dirs.remove(i);

                 //File f= (File)m_dirs.get(i);

                 //System.out.println(f.toString());

                 String fileName=f.toString();

                

                 if(!f.delete()){

                     throw new Exception("Exception: delete file "+ fileName+" false!");

                     //System.out.println("删除文件/文件夹"+fileName+"失败!");

                 }

             }

         }

         else{

             throw new Exception("Exception: read file list of "+m_root.toString()+"false!");

             //System.out.println("ArrayList==null");

         }

     }

     /*

      * root director

      */

     private static java.io.File m_root;

    

     private static ArrayList m_dirs;

     //private static int counter=0;

     public static void main(String[] args) {//测试类

        

         File file =new File("H:/小说/小四/天亮说晚安");

         try{

             File.deleteDirs("H:/小说/小四/天亮说晚安");

             //File.deleteDirs(file);

             //File.deleteSubDirs("H:/小说/小四/天亮说晚安");

             //File.deleteSubDirs(file);

//File f=new File("F:/test.txt");

             //f.delete();

         }

         catch(Exception e){

             e.printStackTrace();

         }

         System.out.println("删除成功~");

     }    

}