Java function to pass the api key to BioPortal SPARQL

gistfile1.java

public ResultSet executeQuery(String queryString) throws Exception {
	 Query query = QueryFactory.create(queryString) ;

         QueryEngineHTTP qexec = QueryExecutionFactory.createServiceRequest(this.service, query)		                      
         qexec.addParam("apikey", this.apikey)
         ResultSet results = qexec.execSelect() ;
         return results;
}