Here you can find the source of toString(Document document)
@Deprecated public static String toString(Document document) throws TransformerConfigurationException, TransformerException
//package com.java2s; /*/*from w ww . jav a2 s . co m*/ * ao-lang - Minimal Java library with no external dependencies shared by many other projects. * Copyright (C) 2014, 2016, 2017 AO Industries, Inc. * support@aoindustries.com * 7262 Bull Pen Cir * Mobile, AL 36695 * * This file is part of ao-lang. * * ao-lang 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 * (at your option) any later version. * * ao-lang 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 ao-lang. If not, see <http://www.gnu.org/licenses/>. */ import java.io.IOException; import java.io.StringWriter; import javax.xml.transform.OutputKeys; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Document; import org.w3c.dom.Node; public class Main { /** * @deprecated Use {@link #toString(org.w3c.dom.Node)} instead. */ @Deprecated public static String toString(Document document) throws TransformerConfigurationException, TransformerException { return toString((Node) document); } public static String toString(Node node) throws TransformerConfigurationException, TransformerException { TransformerFactory transformerFactory = TransformerFactory.newInstance(); transformerFactory.setAttribute("indent-number", 4); Transformer transformer = transformerFactory.newTransformer(); transformer.setOutputProperty(OutputKeys.METHOD, "xml"); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); StringWriter writer = new StringWriter(); try { transformer.transform(new DOMSource(node), new StreamResult(writer)); } finally { try { writer.close(); } catch (IOException e) { // Java 1.7: direct constructor AssertionError ae = new AssertionError("IOException should never be thrown from StringWriter"); ae.initCause(e); throw ae; } } return writer.toString(); } }