Gets the first child element of a node.
/* * XAdES4j - A Java library for generation and verification of XAdES signatures. * Copyright (C) 2010 Luis Goncalves. * * XAdES4j is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 3 of the License, or any later version. * * XAdES4j 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 Lesser General Public License for more * details. * * You should have received a copy of the GNU Lesser General Public License along * with XAdES4j. If not, see <http://www.gnu.org/licenses/>. */ //package xades4j.utils; import org.w3c.dom.Element; import org.w3c.dom.Node; /** * Utility methods for DOM nodes. * * @author Lus */ public class DOMHelper { /** * Gets the first child element of a node. * @param node the node to get the child from * @return the first element child of {@code node} or {@code null} if none * @throws NullPointerException if {@code node} is {@code null} */ public static Element getFirstChildElement(Node node) { node = node.getFirstChild(); while (node != null && node.getNodeType() != Node.ELEMENT_NODE) { node = node.getNextSibling(); } return (Element)node; } }