Java tutorial
//package com.java2s; /* * Copyright (c) 2002-2012 Alibaba Group Holding Limited. * All rights reserved. * * 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.Comparator; import java.util.TreeMap; public class Main { public static <K, V> TreeMap<K, V> createTreeMap() { return new TreeMap<K, V>(); } public static <K, V> TreeMap<K, V> createTreeMap(Comparator<? super K> comparator) { return new TreeMap<K, V>(comparator); } }