Here you can find the source of isDescendant(Node test, Node target)
static boolean isDescendant(Node test, Node target)
//package com.java2s; /*//from w ww. j a v a 2s . com * Daisy Pipeline (C) 2005-2008 Daisy Consortium * * This library 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 2.1 of the License, or (at your option) * any later version. * * This library 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 this library; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import org.w3c.dom.Node; public class Main { /** * @return true if test is a descendant of parent */ static boolean isDescendant(Node test, Node target) { Node parent = test.getParentNode(); if (parent == null) return false; else if (parent.equals(target)) return true; //TODO equality, sb == in DOM? return isDescendant(parent, target); } }