Jena Code has emptied my ontology

[kumar rohit]

Hi

I am very surprised that this code, when executed, has vanished my ontology
and my ontology is now empty. I copied another ontology and after executing
few times, again the new ontology is empty. I just want to create the
individual of class and save it locally in the file. There is another
method also in my code but thats just read the file so the main trick is
here. It writed the whole ontology first as model.write() but when GUI
loads and I enter text, again it display output as in
JOptionPane.showMessageDialog() but after the whole exection, the Protege
ontology becomes empty.


*Note: It also create the intended individual but except the User1 class
created in Jena code and its individual, nothing remains in ontology.*



 public static void readOntology(String file,OntModel model)

    {


                    InputStream in =FileManager.get().open(file);



if (in==null) {

throw new IllegalArgumentException( "File: " + file + "  not found");

}

model.read(in,"RDF/XML-ABBREV");

//in.close();



               model.write(System.out);



    }





private static void read1(String str,OntModel model)

    {



  String ns="http://www.semanticweb.org/untitled-ontology-0012/";;

     OntClass user = model.createClass(ns + "User");



     OntClass user1 = model.getOntClass(ns + "User");

    Individual janeSmith = user1.createIndividual(ns + str);



    JOptionPane.showMessageDialog(null, janeSmith.toString());



        try {

           String file="F://hello.owl";





        FileWriter out=new FileWriter(file);