JPA CriteriaQuery vs Iteración

I am wondering about the prefered way to handle where statements in JPA.

Hay dos maneras.

Either you use criteria query like

 CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<Profile> c = cb.createQuery(Profile.class);
    Root<Profile> root = c.from(Profile.class);
    c.where(cb.equal(root.get(Profile_.email), email));
    List<Profile> resultList = em.createQuery(c).getResultList();

or you select the whole table and iterate in java like

    CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<Profile> c = cb.createQuery(Profile.class);
//    Root<Profile> root = c.from(Profile.class);
//    c.where(cb.equal(root.get(Profile_.email), email));
    List<Profile> resultList = em.createQuery(c).getResultList();

    for (Profile profile : resultList) {
      if (profile.getEmail().equals(email)) {
        //todo
      }
    }

What is the prefered way and which pro and cons exists?