Java tutorial
//package com.java2s; /*-------------------------------------------------------------------------+ | | | Copyright 2005-2011 The ConQAT 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.Deque; import java.util.List; public class Main { /** Returns the last element in list or <code>null</code>, if list is empty. */ @SuppressWarnings("unchecked") public static <T> T getLast(List<T> list) { if (list.isEmpty()) { return null; } if (list instanceof Deque<?>) { return ((Deque<T>) list).getLast(); } return list.get(list.size() - 1); } }