Java tutorial
//package com.java2s; /* * Copyright 2012-2014 One Platform Foundation * * 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.Collection; import java.util.Map; public class Main { public static boolean isEmpty(Map<?, ?> list) { return list == null || list.isEmpty(); } public static boolean isEmpty(Collection<?> list) { return list == null || list.isEmpty(); } public static <E> boolean isEmpty(E[] array) { return array == null || array.length == 0; } }