Here you can find the source of isPosixFileSystem()
private static boolean isPosixFileSystem()
//package com.java2s; /*// w ww .j a v a2 s .c o m * Copyright (C) 2016 Cosmin Cara * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 3 of the License, or (at your option) * any later version. * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, see http://www.gnu.org/licenses/ */ import java.nio.file.*; import java.nio.file.attribute.PosixFileAttributeView; public class Main { private static Boolean supportsPosix; private static boolean isPosixFileSystem() { if (supportsPosix == null) { supportsPosix = Boolean.FALSE; FileSystem fileSystem = FileSystems.getDefault(); Iterable<FileStore> fileStores = fileSystem.getFileStores(); for (FileStore fs : fileStores) { supportsPosix = fs .supportsFileAttributeView(PosixFileAttributeView.class); if (supportsPosix) { break; } } } return supportsPosix; } }