Here you can find the source of nvl(T... objs)
@SuppressWarnings({ "unchecked", "varargs" })
public static <T> T nvl(T... objs)
//package com.java2s; /*/*from ww w.ja v a 2s . com*/ * Copyright 2012 tetsuo.ohta[at]gmail.com * * 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 { @SuppressWarnings({ "unchecked", "varargs" }) public static <T> T nvl(T... objs) { for (T obj : objs) { if (obj != null) return obj; } return null; } }