java 复制文件夹里面的内容

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Locale;

 

public class test {

//复制文件夹

public static void copyDir(String oldPath, String newPath) throws IOException {

        File file = new File(oldPath);

        String[] filePath = file.list();

        if (!(new File(newPath)).exists()) {

            (new File(newPath)).mkdir();

        } 

        for (int i = 0; i < filePath.length; i++) {

            if ((new File(oldPath + "/" + filePath[i])).isDirectory()) {

                copyDir(oldPath  + "/"  + filePath[i], newPath  +"/" r + filePath[i]);

            }

            

            if (new File(oldPath  +"/" + filePath[i]).isFile()) {

                copyFile(oldPath + "/"  + filePath[i], newPath + "/"  + filePath[i]);

            }

            

        }

    }

//复制文件

public static void copyFile(String oldPath, String newPath) throws IOException {

        File oldFile = new File(oldPath);

        File file = new File(newPath);

        FileInputStream in = new FileInputStream(oldFile);

        FileOutputStream out = new FileOutputStream(file);;

 

        byte[] buffer=new byte[2097152];

        

        while((in.read(buffer)) != -1){

            out.write(buffer);

        }

        in.close();

        out.close();

    }

//调用方法

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

    

        System.out.println("请输入源目录：");

        String sourcePath ="E://日常巡检";

        System.out.println("请输入新目录：");

        String path = "G://";

        

        //String sourcePath = "D://aa";

        //String path = "D://bb";

        

        copyDir(sourcePath, path);

    }

}