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

Question

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.

Answer 1

Use:

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

instead.

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