Java tutorial
//package com.java2s; /* * #! * Ontopia Engine * #- * Copyright (C) 2001 - 2013 The Ontopia 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.Collection; public class Main { /** * INTERNAL: Gets the first object in the collection. If the * collection is empty, null is returned. */ public static <T> T getFirst(Collection<T> coll) { return (coll == null) || coll.isEmpty() ? null : coll.iterator().next(); } }