Here you can find the source of hasChildNode(Element root, String childNodeName)
static boolean hasChildNode(Element root, String childNodeName)
//package com.java2s; /******************************************************************************************************************** * $Id: XMLUtils.java 604 2004-02-26 17:36:47Z russgold $ * * Copyright (c) 2004, Russell Gold/*from ww w .j ava 2s. co m*/ * * 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.Element; import org.w3c.dom.NodeList; public class Main { static boolean hasChildNode(Element root, String childNodeName) { NodeList nl = root.getElementsByTagName(childNodeName); return (nl.getLength() > 0); } }