Here you can find the source of coalesce(T... args)
public static <T> T coalesce(T... args)
//package com.java2s; /*/*ww w.ja v a2s . c om*/ * This file is part of SQL Workbench/J, http://www.sql-workbench.net * * Copyright 2002-2016 Thomas Kellerer. * * Licensed under a modified Apache License, Version 2.0 (the "License") * that restricts the use for certain governments. * You may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.sql-workbench.net/manual/license.html * * 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. * * To contact the author please send an email to: support@sql-workbench.net */ public class Main { public static <T> T coalesce(T... args) { if (args == null) return null; for (T obj : args) { if (obj != null) return obj; } return null; } }