Here you can find the source of isNullOrEmpty(NodeList nodeList)
public static boolean isNullOrEmpty(NodeList nodeList)
//package com.java2s; /*//www . j a va2 s . co m * Copyright (c) 2017 Public Library of Science * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ import org.w3c.dom.Node; import org.w3c.dom.NodeList; import java.util.List; public class Main { public static boolean isNullOrEmpty(NodeList nodeList) { return nodeList == null || nodeList.getLength() == 0; } public static boolean isNullOrEmpty(List<Node> nodeList) { return nodeList == null || nodeList.size() == 0; } }