删除文件夹的java类

/**
* @author www.nwu.edu.cn MiniRice
* @author darkrice@gmail.com
* @version 1.2
*
*/

package cn.edu.nwu.io;

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;

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