How can I serialize my DOCTYPE with the rest of my XML document

[MAHE Vincent FTRD/DIH/REN]

Hello,

I read an XML document which contains an internal DTD and with DOM I change
some nodes in this document.
Then I try to serialize the new document to a file, but it doesn't serialize
my previous DOCTYPE ....

Can you tell me what's wrong in this serializing Java code :

        SerializerToXML serializer = new SerializerToXML();
        
        serializer.m_shouldNotWriteXMLHeader = false;
        
        File dest_file_descr = new File("out.xml");

        FileWriter dest_file = new FileWriter(dest_file_descr);

        serializer.setWriter(dest_file);
                                            
        if (m_lib_doc != null)
        {            
            serializer.serialize(m_lib_doc);
             
            serializer.flush();
            serializer.flushWriter();
            
            dest_file.close();
            
            System.out.println("    Ended.");
            return true;
        }
        else
            throw new Exception("    m_lib_doc is null !!!");

m_lib_doc  contains my Document object

My XML file is attached to this mail.

And the code I use to read my XML file is here after :

        public Document read_XML_file(String xml_filename)
        {
           Document    xml_doc = null;
           File              xml_file = null;
        
           xml_file = new File(xml_filename);
        
                TransformerFactory tFactory =
TransformerFactory.newInstance();

                if (tFactory.getFeature(DOMSource.FEATURE) &&
tFactory.getFeature(DOMResult.FEATURE))
                {
                    // Instantiate a DocumentBuilderFactory.
                    DocumentBuilderFactory dFactory =
DocumentBuilderFactory.newInstance();

                    dFactory.setNamespaceAware(false);
                                              
                    dFactory.setExpandEntityReferences(true);
                    xml_doc =
dFactory.newDocumentBuilder().parse(xml_filename);
          }
            
            return xml_doc;
        } // read_XML_file()


Thanks.

Vincent

 <<lib_base.xml>> 

lib_base.xml