hibernate example

http://www.roseindia.net/hibernate/firstexample.shtml
http://www.roseindia.net/hibernate/runninge-xample.shtml


with little modification of code as below:

public static void main(String[] args) {
        Session session = null;
        Transaction t = null;
        try{
            // This step will read hibernate.cfg.xml and prepare hibernate for use
            SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
             session =sessionFactory.openSession();
                //Create new instance of Contact and set values in it by reading them from form object
                 System.out.println("Inserting Record");
                 t = session.beginTransaction();
                 session.beginTransaction();
                Contact contact = new Contact();
                contact.setId(0);
                contact.setFirstName("Deepak");
                contact.setLastName("Kumar");
                contact.setEmail("deepak_38@yahoo.com");
                session.save(contact);               
                t.commit();
                System.out.println("Done");
        }catch(Exception e){
            t.rollback();
            System.out.println(e.getMessage());
        }finally{
            // Actual contact insertion will happen at this step
                
            session.flush();
            session.close();

            }


we need to begin and commit transaction to push the data into table.