Here you can find the source of createDocument()
public static Document createDocument() throws ParserConfigurationException
//package com.java2s; /**/*from w w w . ja v a 2s . c o m*/ * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with this * work for additional information regarding copyright ownership. The ASF * licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the License. * You may obtain a copy of the License at * <p/> * http://www.apache.org/licenses/LICENSE-2.0 * <p/> * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ import javax.xml.XMLConstants; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import org.w3c.dom.Document; public class Main { public static Document createDocument() throws ParserConfigurationException { return createDocument(true); } public static Document createDocument(boolean standalone) throws ParserConfigurationException { DocumentBuilderFactory f = DocumentBuilderFactory.newInstance(); f.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, Boolean.TRUE); DocumentBuilder b = f.newDocumentBuilder(); Document d = b.newDocument(); d.setXmlStandalone(standalone); return d; } }