Pagination with Hibernate Criteria in Java

pagination-with-hibernate.java

 public List<Admin> getAllAdminsWithPagination(int page, int recordePerPage) {
	session = HibernateUtil.getSessionFactory().getCurrentSession();
	Transaction tr = null;
	try {
	    tr = session.beginTransaction();
	    Criteria cr = session.createCriteria(Admin.class);
	    cr.setFirstResult((page - 1) * recordePerPage);
	    cr.setMaxResults(recordePerPage);
	    List<Admin> adminAll = cr.list();
	    tr.commit();

	    if (adminAll.isEmpty()) {
		if (log.isDebugEnabled()) {
		    log.debug("Admin users are not exist");
		}
		return null;
	    } else {
		if (log.isDebugEnabled()) {
		    log.debug("Found " + adminAll.size() + " Admin users");
		}
		return adminAll;
	    }
	} catch (RuntimeException ex) {
	    log.error(ex);
	    if (tr != null) {
		tr.rollback(); // roll back the transaction due to runtime error
	    }
	    return null;
	}
 }