How to write boolean type method for JPA criteria syntax

See more:

Java

Hibernate

I want to write a boolean return type method using JPA criteria.

Like

public boolean isEmployeeType(int id) {

// to do

return session.createQuery(criteriaQuery).getSingleResult();
}

I don't know how to accomplish this.

In following code snippet instead of return Employees I want to return boolean so when I'll call the method I don't need to check null but boolean.

like

if(bLManager.isEmployeeType(12).false {
// to do
}

What I have tried:

 public Employees isEmployeeType(int id) {
        Employees employees;
        try (Session session = sf.openSession()) {
            CriteriaBuilder criteriaBuilder = sf.getCriteriaBuilder();
            CriteriaQuery criteriaQuery = criteriaBuilder.createQuery();

            Root root = criteriaQuery.from(Employees.class);

         criteriaQuery.select(criteriaBuilder.equal(root.get("id"),id))
 .where(criteriaBuilder.equal(root.get("employeetype"), "Store Clerk"));
return employees = Employees)session.createQuery(criteriaQuery).getSingleResult();
        }
    }