Java tutorial
//package com.java2s; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBElement; import javax.xml.bind.JAXBException; import javax.xml.bind.Marshaller; import javax.xml.validation.Schema; import java.io.ByteArrayOutputStream; public class Main { public static String getXmlString(JAXBElement versioningInfo, Boolean formatXml, Schema schema) throws JAXBException { String packageName = versioningInfo.getValue().getClass().getPackage().getName(); JAXBContext context = JAXBContext.newInstance(packageName); Marshaller marshaller = context.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, formatXml); if (schema != null) { marshaller.setSchema(schema); } ByteArrayOutputStream oStream = new ByteArrayOutputStream(); marshaller.marshal(versioningInfo, oStream); return oStream.toString(); } }