Java tutorial
//package com.java2s; /* * Copyright (C) 2014-present, Wei Chou (weichou2010@gmail.com) * * 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; public class Main { public static <T> boolean contains(T elem, T[] array) { if (array != null && array.length > 0) { for (T ds : array) { if (elem.equals(ds)) { return true; } } } return false; } public static <T> boolean contains(T elem, Collection<T> collection) { if (collection != null && collection.size() > 0) { for (T ds : collection) { if (elem.equals(ds)) { return true; } } } return false; } }