Java tutorial
//package com.java2s; /** * Copyright (C) [2013] [The FURTHeR Project] * * 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.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; public class Main { /** * A factory method of maps. * * @param <K> * key type * @param <V> * value type * @param mapType * map implementation identifier * @return an empty map */ public static <K, V> ConcurrentMap<K, V> newConcurrentMap() { return new ConcurrentHashMap<>(); } }