Java tutorial
//package com.java2s; import java.io.File; import java.io.FileWriter; 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.TransformerFactoryConfigurationError; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Document; public class Main { public static void saveDocument(Document document, String path) throws TransformerConfigurationException, TransformerFactoryConfigurationError, TransformerFactoryConfigurationError, TransformerException, IOException { StringWriter sw = new StringWriter(); StreamResult sr = new StreamResult(sw); DOMSource dom = new DOMSource(document); TransformerFactory transformerFactory = TransformerFactory.newInstance(); transformerFactory.setAttribute("indent-number", 4); Transformer transformer = transformerFactory.newTransformer(); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); transformer.transform(dom, sr); String string = sw.toString(); FileWriter fw = new FileWriter(new File(path)); fw.write(string); fw.close(); } }