Here you can find the source of serialize(Document document, OutputStream ostream)
public static void serialize(Document document, OutputStream ostream) throws IOException
//package com.java2s; /******************************************************************************* * Copyright (c) 2004 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * /*from www . j a v a2 s . c o m*/ * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ import java.io.IOException; import java.io.OutputStream; import javax.xml.transform.OutputKeys; import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.TransformerFactoryConfigurationError; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Document; public class Main { public static void serialize(Document document, OutputStream ostream) throws IOException { Source domSource = new DOMSource(document); try { Transformer serializer = TransformerFactory.newInstance() .newTransformer(); try { serializer.setOutputProperty(OutputKeys.INDENT, "yes"); serializer.setOutputProperty( "{http://xml.apache.org/xslt}indent-amount", "4"); serializer.setOutputProperty(OutputKeys.ENCODING, "UTF-16"); } catch (IllegalArgumentException e) { // unsupported properties } serializer.transform(domSource, new StreamResult(ostream)); } catch (TransformerConfigurationException e) { throw new IOException(e.getMessage()); } catch (TransformerFactoryConfigurationError e) { throw new IOException(e.getMessage()); } catch (TransformerException e) { throw new IOException(e.getMessage()); } } }