Here you can find the source of isOrphanNode(Node node)
public static boolean isOrphanNode(Node node)
//package com.java2s; /* ****************************************************************************** * Copyright (c) 2006-2012 XMind Ltd. and others. * /* ww w. j a v a 2 s . c o m*/ * This file is a part of XMind 3. XMind releases 3 and * above are dual-licensed under the Eclipse Public License (EPL), * which is available at http://www.eclipse.org/legal/epl-v10.html * and the GNU Lesser General Public License (LGPL), * which is available at http://www.gnu.org/licenses/lgpl.html * See http://www.xmind.net/license.html for details. * * Contributors: * XMind Ltd. - initial API and implementation *******************************************************************************/ import org.w3c.dom.Node; public class Main { public static boolean isOrphanNode(Node node) { if (node == null) return true; if (node.getNodeType() == Node.DOCUMENT_NODE) return false; return isOrphanNode(node.getParentNode()); } }