How to extract the synonyms of a specific individual from the whole Ontology?

Question

I am implementing an ontology in Eclipse with jena.I am trying to fetch the synonyms of an individual from whole ontology.

How i will get all the synonyms of a specific individual from whole ontology irrespective of the class.

 static final String inputFileName = "http://word.owl";
OntModel inf = ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM_RULE_INF);
        InputStream in = FileManager.get().open(inputFileName);
        inf.read(in, "");       
        ExtendedIterator classes = inf.listClasses();
        while(classes.hasNext())
        {
            OntClass obj = (OntClass) classes.next();
            String className = obj.getLocalName().toString();
            System.out.println("Class Name : "+className);                         
        }   
        ExtendedIterator instances = inf.listIndividuals();
        while(instances.hasNext())
        {
            Individual ind = (Individual) instances.next();
            String indName = ind.getLocalName().toString();
            System.out.println("Individual Name : "+indName);                          
        }    

    ExtendedIterator property = inf.listDatatypeProperties();
   while(property.hasNext())
   {
       DatatypeProperty prop = (DatatypeProperty) property.next();
        String propName = prop.getLocalName().toString();
        System.out.println("Data Propties Name : "+propName);                           
    }
    ExtendedIterator property1 = inf.listObjectProperties();
    while(property1.hasNext())
    {
       ObjectProperty prop = (ObjectProperty) property1.next();
      String propName = prop.getLocalName().toString();
     System.out.println("Object Propties Name : "+propName);                           
}

    ObjectProperty isSynonymOf = inf.getObjectProperty("http://www.../Word#isSynonymOf"); 

    System.out.println("Individuals having isSynonymOf Proterty:");

    ExtendedIterator individuals1 = inf.listIndividuals();
    while(individuals1.hasNext())
    {
        Individual ind = (Individual) individuals1.next();
        if(ind.getProperty(isSynonymOf) != null)
       {
           String indName = ind.getLocalName().toString();
           System.out.println(indName);
       }


       }
}

Problem :when i will enter an individual for example software It should give me all the synonyms as - Software
- Software Architecture - Software design - Program

This is my OWL file

  <?xml version="1.0"?>
  <rdf:RDF xmlns="http://www.semanticweb.org/ontologies/Word#"
  xml:base="http://www.semanticweb.org/ontologies/Word"
  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:owl="http://www.w3.org/2002/07/owl#"
  xmlns:xml="http://www.w3.org/XML/1998/namespace"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
 <owl:Ontology rdf:about="http://www.semanticweb.org/ontologies/Word"/>

Answer 1

The default OntModel doesn't consider apply OWL reasoning ,thus, inference has to be enabled to explicitely to consider symmetric properties:

OntModel model = ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM_RULE_INF);

See the documentation for more details.

Just a side note, Jena has lots of convenience methods, e.g. your code could be shortened by using

model.listSubjectsWithProperty(isSynonymOf)