OWLAPI : Create new Reasoner (HermiT)

Question

I want to create new reasoner (HermiT).

What is the difference between following two approaches :-

1) Using Factory : [org.semanticweb.HermiT.ReasonerFactory]

ReasonerFactory factory = new ReasonerFactory();
OWLReasoner reasoner =  factory.createReasoner(ontology, configuration);

2) Using constructor : [org.semanticweb.HermiT.Reasoner]

Reasoner reasoner = new Reasoner(configuration, ontology);

Answer 1

The factory might carry out more initialization steps - depends on the reasoner.

In HermiT's case there is no difference. However, the constructor might change between versions; the factory is an owlapi interface and therefore it will give you a seamless interface if you move to a different HermiT version.