通过调用Files.getAttribute（）方法查找组

import java.io.IOException;

import java.nio.file.Files;
/** from 
时 代 J a v a**/

import java.nio.file.LinkOption;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.nio.file.attribute.GroupPrincipal;


public class Main {

  public static void main(String[] args) {


    Path path = Paths.get("/home/folder1/folder2/folder3/test.txt");

    try {

      GroupPrincipal group = (GroupPrincipal) Files.getAttribute(path,

          "posix:group", LinkOption.NOFOLLOW_LINKS);/**来 自 时代Java - N o w  J a v