Document removes xml header

[Michael Kail]

Morning everybody!

Could it be, that the java class org.w3c.dom.Document removes my xml
header information(<?xml version="1.0" encoding=...)??? 
Before loading the xml file there is a header, after making an enveloped
xml signature and writing it back into file there is none.
Could it be that the Document class removes that information? Currently
am adding the header after signing with JDOM.... But I have to open and
parse 
The file again(ugly!).

Thanxs!!!!!

There's my source code, if there's any error... tell me:

javax.xml.parsers.DocumentBuilderFactory dbf =
                 javax.xml.parsers.DocumentBuilderFactory.newInstance();

           //dbf.setNamespaceAware(true);
        
           javax.xml.parsers.DocumentBuilder db =
dbf.newDocumentBuilder();
              
           org.w3c.dom.Document doc = db.parse(signatureFile);
              
           String BaseURI = signatureFile.toURL().toString();
              
        
ElementProxy.setDefaultPrefix("http://www.w3.org/2000/09/xmldsig#","";);
              
              XMLSignature sig = new XMLSignature(doc, BaseURI,
        
XMLSignature.ALGO_ID_SIGNATURE_DSA);
              
              //add signature information to document
              Node nl = doc.getFirstChild();
              nl.appendChild(sig.getElement());
              
              Transforms transforms = new Transforms(doc);

        
transforms.addTransform(Transforms.TRANSFORM_ENVELOPED_SIGNATURE);
                   
              //add document "archivdescriptor" to signed content
              sig.addDocument("", transforms,
Constants.ALGO_ID_DIGEST_SHA1);
              
              {
                 X509Certificate cert =
                    (X509Certificate)
ks.getCertificate(certificateAlias);
        
                 sig.addKeyInfo(cert);
                 sig.addKeyInfo(cert.getPublicKey());
                 sig.sign(privateKey);
              }
        
              FileOutputStream f = new FileOutputStream(signatureFile);
              
              XMLUtils.outputDOMc14nWithComments(doc, f);
              f.close();