自己做的简单工具类

package com.neo.util;

import java.io.File;

public class Fileutil {
    public static void fun1(File file) {
        if (file.isDirectory()) {
            for (File file2 : file.listFiles()) {
                fun1(file2);
        }
            }
        System.out.println(file.getName());
        }
    public static void main(String[] args) {
        File file = new File("e:"+File.separator+"test");
        fun1(file);
    }

}