Here you can find the source of emptyOrNull(String... arrStr)
public static boolean emptyOrNull(String... arrStr)
//package com.java2s; public class Main { public static boolean emptyOrNull(String str) { return str == null || str.length() == 0; }/*from ww w. j av a 2 s . com*/ public static boolean emptyOrNull(String... arrStr) { for (String str : arrStr) { if (emptyOrNull(str)) { return true; } } return false; } }