Here you can find the source of findTopResourceInVolume(FileStore fstore, Path path)
private static Path findTopResourceInVolume(FileStore fstore, Path path) throws IOException
//package com.java2s; /**//from ww w. java 2 s . c o m * Copyright 2010 The University of North Carolina at Chapel Hill * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.IOException; import java.net.URI; import java.nio.file.FileStore; import java.nio.file.FileSystems; import java.nio.file.Path; import java.nio.file.Paths; public class Main { private static Path findTopResourceInVolume(FileStore fstore, Path path) throws IOException { Path parent = path.getParent(); if (parent == null) { return path; // root will do for default file system } else { FileStore parentStore = FileSystems.getDefault().provider().getFileStore(parent); if (fstore.equals(parentStore)) { return findTopResourceInVolume(fstore, parent); } else { return path; } } } public static FileStore getFileStore(URI uri) throws IOException { Path path = Paths.get(uri); FileStore fstore = path.getFileSystem().provider().getFileStore(path); return fstore; } }