[数据结构与算法]java File 递归遍历和删除

package com.seven.file;

import java.io.File;

public class Recursion {
    public static void main(String[] args) {
        //递归遍历
        ergodicFile(new File("D:\\test"));
        //递归删除
        deleteFiles(new File("D:\\testss"));
    }

    private static void deleteFiles(File file) {
        if (!file.exists())return;
        File[] files = file.listFiles();
        if (files==null||files.length==0)return;
        for (File f : files) {
            if (f.isDirectory()){
                deleteFiles(f);
            }else{
                System.out.println(f.getAbsolutePath());
                f.delete();
            }
        }
        System.out.println(file.getAbsolutePath());
        file.delete();
    }

    private static void ergodicFile(File file) {
        if (!file.exists()) return;//路径不存在也返回
        System.out.println(file.getAbsolutePath());
        File[] files = file.listFiles();

        if (files==null||files.length==0) return;//没有内容也返回

        for (File f:files) {
            if (f.isDirectory()){
                ergodicFile(f);
            }else{
                System.out.println(f.getAbsolutePath());
            }
        }
    }

}

删除返回结果

D:\testss\a.txt
D:\testss\accsd.txt
D:\testss\Afdse.txt
D:\testss\arewger.txt
D:\testss\b.txt
D:\testss\person.person
D:\testss\q.txt
D:\testss\test.txt
D:\testss\testeeee\fe.txt
D:\testss\testeeee\fefgregre.properties
D:\testss\testeeee\新建文件夹\新建文件夹\新建 RTF 文档.rtf
D:\testss\testeeee\新建文件夹\新建文件夹
D:\testss\testeeee\新建文件夹\新建文本文档.txt
D:\testss\testeeee\新建文件夹
D:\testss\testeeee
D:\testss\w.txt
D:\testss