[FIXED] java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer in java 1.6

Issue

Even I'm casting Object into int, but this exception occur...

Actually my Hibernate-JPA method was return Object then I'm converting that Object into int...

Here is my Hibernate code:

@Transactional
public Object getAttendanceList(User user){

    Query query = entityManager.createQuery("select Count(ad) from AttendanceDemo ad inner join ad.attendee at  where at.user=:user",
            Long.class);
    query.setParameter("user", user);
    return query.getSingleResult();
}

Now I'm converting this Object as int:

int k = (Integer) userService.getAttendanceList(currentUser);

I'm converting Object to Integer.

Solution

Use:

((Long) userService.getAttendanceList(currentUser)).intValue();

instead.

The .intValue() method is defined in class Number, which Long extends.

Answered By - fge
Answer Checked By - Marilyn (JavaFixing Volunteer)