Java tutorial
//package com.java2s; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.Writer; import javax.xml.transform.OutputKeys; 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 { private static final String ENCODING = "UTF-8"; private static final String INDENT = "yes"; public static synchronized boolean update(String sourceXML, Document doc) { try { Transformer tf = TransformerFactory.newInstance().newTransformer(); tf.setOutputProperty(OutputKeys.ENCODING, ENCODING); tf.setOutputProperty(OutputKeys.INDENT, INDENT); Writer out = new FileWriter(new File(sourceXML)); tf.transform(new DOMSource(doc), new StreamResult(out)); return true; } catch (TransformerException | IOException e) { e.printStackTrace(); } return false; } }