public static List findUsersByEmailId(EntityManager em,String email) {
        Query query = em.createQuery(
                "SELECT u FROM UserProfile u" +
                " WHERE u.EMAILID = :emailId");
        query.setParameter("emailid",email);
        return performQuery(query);
    }
 private static List performQuery(final Query query) {
        List resultList = query.getResultList();
        if (resultList.isEmpty()) {
            return null;
        }
        ArrayList<UserProfile> results = new ArrayList<>();
        results.addAll(resultList);
        return results;
    }

  public void lookup() {
       List<UserProfile> results = new ArrayList();
       if (!"".equals(UserProfileBean.getEmailId())) {
            // lookup by id
            results = getEmailId(em,UserProfileBean);
       }
  }
   private List<User> getEmailId(EntityManager em,UserProfile userData) {
        ArrayList<User> result = new ArrayList<>();
        UserProfile userP = findUsersByEmailId(em,UserProfile.getEmailId());
        if (user != null && user.matches(userData)) {
            result.add(user);
        }
        return result;
    }