By copying the Jena-libs into the "code" directory i was able to run the code from Ian Dickinson in Processing.

The Processing code is :

1. import com.hp.hpl.jena.rdf.model.Model;
   import com.hp.hpl.jena.rdf.model.ModelFactory;
   import com.hp.hpl.jena.rdf.model.Property;
   import com.hp.hpl.jena.rdf.model.Resource;
   import com.hp.hpl.jena.datatypes.xsd.XSDDatatype;
   
   Model m = ModelFactory.createDefaultModel();
     String NS = "http://example.com/test/";
      
   void setup()
   { 
     size(200,200);
    
     noLoop();
   }
   
   void draw()
   {
     Resource r = m.createResource(NS + "r");
       Property p = m.createProperty(NS + "p");
      
       r.addProperty(p,  "hello world", XSDDatatype.XSDstring);
      
       m.write(System.out, "Turtle");
   }

I used Processing 2.0b3 and Apache-Jena-2.7.4