Java tutorial
//package com.java2s; import java.io.StringWriter; import javax.xml.transform.Transformer; 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; public class Main { public static String documentToXmlString(Document document) { DOMSource domSource = new DOMSource(document); StringWriter writer = new StringWriter(); StreamResult result = new StreamResult(writer); TransformerFactory tf = TransformerFactory.newInstance(); Transformer transformer; try { transformer = tf.newTransformer(); transformer.transform(domSource, result); } catch (TransformerException e) { throw new RuntimeException(e.getMessage()); } return writer.toString(); } }