Hibernate Output-01

What is the Output of this program 

public static void main(String[] args) {

              UserDetails user= new UserDetails();

       user.setUserName("Fist User");

                  SessionFactory sessionFactory =     new Configuration().configure().buildSessionFactory();

           Session session = sessionFactory.openSession();

           session.beginTransaction();

user.setUserName("Second User");

user.setUserName("Third  User");

           session.save(user);

   user.setUserName("Fourth   User");  
   user.setUserName("Fifth   User");  

           session.getTransaction().commit();

           session.close();

                      

   }

   

What is the Current data stored in the data base  ?

Ans is - Fifth User 
 Please go through diagram