JAVA实现文件夹和文件的复制

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package com.tuzi.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyFille {
    public static void copyDir(String sourcePath, String newPath) throws IOException {
        File file = new File(sourcePath);
        String[] filePath = file.list();
        
        if (!(new File(newPath)).exists()) {
            (new File(newPath)).mkdir();
        }
        
        for (int i = 0; i < filePath.length; i++) {
            if ((new File(sourcePath + file.separator + filePath[i])).isDirectory()) {
                copyDir(sourcePath  + file.separator  + filePath[i], newPath  + file.separator + filePath[i]);
            }
            
            if (new File(sourcePath  + file.separator + filePath[i]).isFile()) {
                copyFile(sourcePath + file.separator + filePath[i], newPath + file.separator + filePath[i]);
            }
            
        }
    }
    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];
        int readByte = 0;
        while((readByte = in.read(buffer)) != -1){
            out.write(buffer, 0, readByte);
        }
        System.out.println("完成");
        in.close();
        out.close();
    }

    public static void main(String[] args) {
        String sourcePath = "F:/php/PHPWAMP/wwwroot";
        String path = "F:/php/PHPWAMP/wwwroot/bb";
        
        try {
            copyDir(sourcePath, path);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}