JPA - How to get department name with maximum salary in JPQL?

    private static void findHighestSalaryDept() {
        System.out.println("-- Dept with max salary --");
        EntityManager em = entityManagerFactory.createEntityManager();
        TypedQuery<String> query = em.createQuery("SELECT d.name FROM Department d "
                        + " JOIN d.employees e where e.salary = (SELECT MAX(e2.salary) FROM Employee e2) ",
                String.class);
        String dept = query.getSingleResult();
        System.out.println(dept);
    }