Problem of reading OWL/XML
- by Mikae Combarado
Hello,
I have a problem reading OWL/XML files from Java using Jena.
I have no problem reading RDF/XML files, but whenever I create a OWL/XML file from Protege and try to read it, Java gives this error below :
WARN [main] (RDFDefaultErrorHandler.java:36)
Exception in thread "main" java.lang.NullPointerException
at com.hp.hpl.jena.rdf.arp.impl.XMLHandler.endElement(XMLHandler.java:143)
The code that I use to retrieve RDF/XML is below :
OntModel ontModel = ModelFactory.createOntologyModel();
InputStream in = FileManager.get().open(inputFileName);
if (in == null) {
throw new IllegalArgumentException( "File: " + inputFileName + " not found");
}
ontModel.read(in, "");
This code works with RDF/XML perfectly. However, I cannot read an OWL/XML. I looked at Internet and I couldn't find anything.
I would really appreciate, if someone shows me a way.
Many thanks