Java tutorial
//package com.java2s; /** * vertigo - simple java starter * * Copyright (C) 2013, KleeGroup, direction.technique@kleegroup.com (http://www.kleegroup.com) * KleeGroup, Centre d'affaire la Boursidiere - BP 159 - 92357 Le Plessis Robinson Cedex - France * * 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. */ public class Main { static void checkNotNull(final Object value, final String msg) { if (value == null) { throw new NullPointerException(msg); } } }