001/**
002 *
003 * Copyright 2015-2018 Florian Schmaus
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smack.util;
018
019public class Objects {
020
021    public static <T> T requireNonNull(T obj, String message) {
022        if (obj == null) {
023            throw new NullPointerException(message);
024        }
025        return obj;
026    }
027
028    public static <T> T requireNonNull(T obj) {
029        return requireNonNull(obj, null);
030    }
031
032    public static boolean equals(Object a, Object b) {
033        return a == b || (a != null && a.equals(b));
034    }
035}