实用代码：清理空文件夹

 Java代码（需要安装java环境）

import java.io.File;
import java.io.IOException;

/**
 * @author 王大仙儿
 * @date 2019/12/16 16:47
 */
public class CleanNullFile {

    public static void main(String[] args) {
        if (args[0].isEmpty()) {
            System.out.println("请输入路径");
        } else {
            for (String path : args) {
                File file = null;
                try {
                    file = new File(path + File.separator + "正在删除空文件夹");
                    if(file.createNewFile()){
                        clean(path);
                    }else{
                        System.err.println("操作文件夹失败，请检查目录权限");
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                    if (file != null) {
                        file.delete();
                    }
                }
            }
        }
    }

    private static void clean(String path) {
        File[] files = new File(path).listFiles();
        if (files.length == 0) {
            File file = new File(path);
            if (file.delete()) {
                System.out.println("删除空文件夹：" + file.getPath());
            } else {
                System.err.println("删除文件夹失败：" + file.getPath());
            }
            clean(file.getParent());
        } else {
            for (File file : files) {
                if (file.isDirectory()) {
                    clean(file.getPath());
                }
            }
        }
    }

}