Java EE (Java Enterprise Edition) General Discussion

Hi I am using the following code to make a simple SOAP message!But when i see the generated XML I can not see the

<?xml version="1.0" encoding="UTF-8"?>

How I will be able to add this line?

   MessageFactory mf = MessageFactory.newInstance();
    SOAPMessage message = mf.createMessage();
    SOAPPart sp = message.getSOAPPart();
    SOAPEnvelope envelope = sp.getEnvelope();
    SOAPHeader header = envelope.getHeader();
    SOAPBody body = envelope.getBody();
    SOAPHeaderElement headerElement = header.addHeaderElement(envelope.createName("SessionID","m","Some-URL"));
    headerElement.addAttribute(envelope.createName("value"),"2123123");
    SOAPBodyElement bodyElement = body.addBodyElement(envelope.createName("StartSession", "m","Some-URL"));
    bodyElement.addChildElement("username").addTextNode("TestUser");
    message.saveChanges();
    message.writeTo(new FileOutputStream(new File("c:/test.xml")));
    message.writeTo(System.out);
 

The strange thing is that when i use a transformer to read the generated XML from the file and then save it again in another file..it adds the
<?xml version="1.0" encoding="UTF-8"?>

Any hints?