I suspect the following error in the documentation at http://jena.apache.org/tutorials/rdf_api.html
About 1/3 of the way down the page:
> To write large files and preserve blank nodes, write in N-Triples format:
> // now write the model in XML form to a file
> model.write(System.out, "N-TRIPLE");
The comment should likely read, "//now write the model in N-TRIPLE form to a file"