Java tutorial
//package com.java2s; /* * Copyright 2017-present Facebook, Inc. * * 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 com.google.common.collect.ImmutableMap; import java.nio.file.Path; import java.util.Map; public class Main { public static ImmutableMap<Path, Path> applyFilenameFormat(Map<String, Path> filesToHashes, Path deviceDir, String filenameFormat) { ImmutableMap.Builder<Path, Path> filesBuilder = ImmutableMap.builder(); for (Map.Entry<String, Path> entry : filesToHashes.entrySet()) { filesBuilder.put(deviceDir.resolve(String.format(filenameFormat, entry.getKey())), entry.getValue()); } return filesBuilder.build(); } }