gistfile1.java

public boolean authenticate( String name, String voterId ) {
		Voter voter = getVoter( name );
		if ( voter == null ) {
			return false;
		}
		if ( voter.getVoterId().equals(voterId)) {
			return true;
		}
		return false;
	}
	
	public Voter getVoter( String name ) {
		EntityManager em = emf.createEntityManager();
		Query query = em.createNamedQuery("Voter.findVoter");
		query.setParameter("name", name);
		
		query.getResultList();
		List result = query.getResultList();
		if (result.size() < 1) {
			return null;
		}
		Voter voter = (Voter)result.get(0);
		return voter;
	}