java - 为什么many-to-one的lazy属性不管用，在取出student的同时也取出了classes的信息

@Test
public void getStudents {
Students student= null;
Session session = null;
Transaction tx = null;
try{
session = HibernateUtil.getSession();
tx = session.beginTransaction();
student= (Students)session.load(Students.class, 67833);
tx.commit();
}catch(Exception e){
e.printStackTrace();
}finally{
session.close();
}
}