Java实现文件的删除、拷贝和递归

Java删除和拷贝文件递归实现方法简单点：程序自己调用自己

实现文件的删除和拷贝，代码如下：

package com.viita;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

public class Dptest {

//删除制定文件夹的所有文件及根文件夹

public void deleteFile(String path) {

// TODO Auto-generated method stub

File f = new File(path);

if(f.isDirectory())

{

File[] file = f.listFiles();

for (File file2 : file) {

this.deleteFile(file2.toString());

file2.delete();

}

}else

{

f.delete();

}

f.delete();

}

//拷贝整个文件夹的方法

public void copyFiles(String path1, String path2) throws Exception {

// TODO Auto-generated method stub

File file = new File(path1);

if(file.isDirectory())

{

File f = new File(path2);

if(!f.exists()) f.mkdir();

File[] files = file.listFiles();

for (File file2 : files) {

//System.out.println(file2.toString()+"-----"+path2+"/"+file2.getName());

copyFiles(file2.toString(),path2+"/"+file2.getName());

}

}else

{

copy(path1,path2);

}

}

//拷贝单个文件的方法

public void copy(String path1,String path2) throws IOException {

// TODO Auto-generated method stub

DataInputStream in = new DataInputStream(

new BufferedInputStream(

new FileInputStream(path1)));

byte[] date = new byte[in.available()];

in.read(date);

DataOutputStream out = new DataOutputStream(

new BufferedOutputStream(

new FileOutputStream(path2)));

out.write(date);

in.close();

out.close();

}

public static void main(String[] args) throws Exception {

Dptest dp = new Dptest();

dp.deleteFile("c:/wmpub");

// dp.copyFiles("c:/新建文件夹", "c:/xiao");

}

}

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