Java tutorial
//package com.java2s; import org.w3c.dom.Document; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.Transformer; import javax.xml.transform.OutputKeys; import javax.xml.transform.stream.StreamResult; import javax.xml.transform.dom.DOMSource; import java.io.IOException; import java.io.FileOutputStream; public class Main { public static void saveDocument(Document dom, String file) throws TransformerException, IOException { TransformerFactory tf = TransformerFactory.newInstance(); Transformer transformer = tf.newTransformer(); transformer.setOutputProperty(OutputKeys.DOCTYPE_PUBLIC, dom.getDoctype().getPublicId()); transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, dom.getDoctype().getSystemId()); DOMSource source = new DOMSource(dom); StreamResult result = new StreamResult(); FileOutputStream outputStream = null; try { outputStream = new FileOutputStream(file); result.setOutputStream(outputStream); transformer.transform(source, result); outputStream.flush(); } finally { if (outputStream != null) { outputStream.close(); } } } }