Here you can find the source of isNullOrEmpty(String message, String string)
public static void isNullOrEmpty(String message, String string)
//package com.java2s; /**/*from ww w.j av a2 s .c o m*/ * Copyright 2014 Comcast Cable Communications Management, LLC * * This file is part of CATS. * * CATS is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * CATS is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with CATS. If not, see <http://www.gnu.org/licenses/>. */ import java.util.List; public class Main { public static void isNullOrEmpty(String message, String string) { if ((null == string) || (string.isEmpty())) { throw new IllegalArgumentException(message); } } public static void isNullOrEmpty(String message, List<?> list) { if ((null == list) || (list.isEmpty())) { throw new IllegalArgumentException(message); } } public static void isNullOrEmpty(String message, Object[] stringArray) { if ((null == stringArray) || (stringArray.length <= 0)) { throw new IllegalArgumentException(message); } } public static void isEmpty(String message, String string) { if (string.isEmpty()) { throw new IllegalArgumentException(message); } } }