Invoke Transformation by specifying template

[Theo Gülcher]

I am trying the Up-conversion using XSLT 2.0 GEDCOM example.

I want to make the Stage One conversion from a GEDCOM file to RAW XML from Java:

My code is:
private static FileOutputStream transform() {
FileOutputStream out = null;
try {
TransformerFactory factory = TransformerFactory.newInstance();
StreamSource xsl = new StreamSource("gedcom2rawxml.xsl");
Templates templates = factory.newTemplates(xsl);
Transformer transformer = templates.newTransformer();
out = new FileOutputStream("family.xml");
File in = new File("family.ged");
transformer.setParameter("input", readFile(in));

    StreamResult result = new StreamResult(out);
    StreamSource source = new StreamSource(sourcePath);
    transformer.transform(source, result);

    net.sf.saxon.Transform t = new net.sf.saxon.Transform();
    t.
} catch (TransformerConfigurationException e) {
    e.printStackTrace();
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (TransformerException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}
return out;

}

When I run this I get:

Error on line 1 of file:/g:/family/myfamily.ged:
SXXP0003: Error reported by XML parser: Document root element is missing.
net.sf.saxon.trans.DynamicError: org.xml.sax.SAXParseException: Document root element is missing.

Can someone help me by getting this textfile to transform?

Thanks in advance!

Theo.