Here you can find the source of newDocument()
public final static Document newDocument() throws ParserConfigurationException
//package com.java2s; import org.w3c.dom.*; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; public class Main { /**/* w w w.j a v a 2 s . c o m*/ * Create blank Document. */ public final static Document newDocument() throws ParserConfigurationException { DocumentBuilderFactory factory = DocumentBuilderFactory .newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); return builder.newDocument(); } /** * Create blank Document, and insert root element with given name. */ public final static Document newDocument(String rootElementName) throws ParserConfigurationException { Document doc = newDocument(); doc.appendChild(doc.createElement(rootElementName)); return doc; } }