Collaborate with other people doing the project or related projects. It
is clear there are several of you.
On 15/07/16 10:09, kumar rohit wrote:
Yes you are right sir, it is a project based assignment but stuck in the
first portion/part of creating individuals based on user entered string.
I i
Yes you are right sir, it is a project based assignment but stuck in the
first portion/part of creating individuals based on user entered string.
I initialized the OntModel in the button handler as:
jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
OntModel model=ModelFactory.createOntolo
OntModel is the in-memory knowledge base.That's where you create the
individual. By the way, some of your class mates asked similar things on
Stackoverflow, so it looks like you're doing some assignments.
I also don't see the problem. A user enters a String and you use this to
create the individual
I am sorry but I thought if Ontclass can be passed as null, so shall be
OntModel. My sole purpose is to pass the string entered by user to the
read() which can be used create individuals.
On Thu, Jul 14, 2016 at 5:03 AM, Lorenz B. <
buehm...@informatik.uni-leipzig.de> wrote:
> In which the seco
In which the second argument is the class and not the model as in your
code. It looks like you did mostly copy and paste without understanding
the code.
In your case the model is ALWAYS null, do you understand that?
> I have read it here:
> http://tutorial-academy.com/category/java/
>
> He used nu
I have read it here:
http://tutorial-academy.com/category/java/
He used null argument in the main() method:
public static void main(String[] args)
{
// create OntModel
OntModel model = ModelFactory.createOntologyModel();
// read camera ontology
readOntology( "./ontology/camera.owl", model );
// s
I don't get it. Where did you saw this in the Jena tutorial?
And do you understand that when you call in your main()
read(str, null);
that the second argument is always null, thus, the code will never go
into the if-clause?
> The read() method is given below: I used null reference after reading
The read() method is given below: I used null reference after reading this
tutorial of Jena which used it in main().
*Since I have to create individual of name entered in text field and then
button clicked, either I need OntClass in button handler or the string of
text field in the read() method.*
Andy already told you correctly that you call
read(str, null) thus the second argument is null.
Moreover, you did not show the read() method but only readOntology(),
thus, nobody knows what's going inside the read() method. But obviously,
some object is null and you call a method on that. I sugge
*As I also mentioned in the code: model.write(), it writes the rdf to
console and load the GUI also.*
*But when I enter text and press button ,it gives exception error:*
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javaapplication4.NewJFrame.read(NewJFrame.java:53)
at j
The error message no changed to : I dont think its UI problem
ERROR [main] (RDFDefaultErrorHandler.java:44) - Premature end of file.
Exception in thread "main" com.hp.hpl.jena.shared.JenaException:
org.xml.sax.SAXParseException; Premature end of file.
at
com.hp.hpl.jena.rdf.model.impl.RDFDefaultE
This looks rather similar to ;
http://stackoverflow.com/questions/38351713/creating-individual-in-jena
I suggest local collaboration.
On 13/07/16 16:37, kumar rohit wrote:
Hi
I have the following code in which I want to create an instance/individual
of the class Student. The student name is en
On 13/07/16 16:58, kumar rohit wrote:
Hi
I have the following code in which I want to create an instance/individual
of the class Student. The student name is entered in a text box (in a
button even handler). But it gives exception.
_
public class NewJFram
Hi
I have the following code in which I want to create an instance/individual
of the class Student. The student name is entered in a text box (in a
button even handler). But it gives exception.
_
public class NewJFrame extends javax.swing.JFrame {
publ
Hi
I have the following code in which I want to create an instance/individual
of the class Student. The student name is entered in a text box (in a
button even handler). But it gives exception.
_
public class NewJFrame extends javax.swing.JFrame {
publ
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