public class HibernateUtil
{   
    private static final SessionFactory sessionFactory;

    static {
        try {
            // Create the SessionFactory
            sessionFactory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Make sure you log the exception, as it might be swallowed
           System.out.println("ERROR INITIALIZING!");
           ex.printStackTrace();
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static final ThreadLocal session = new ThreadLocal();

    public static Session currentSession() {
        Session s = (Session) session.get();
        // Open a new Session, if this Thread has none yet
        if (s == null) {
            s = sessionFactory.openSession();           
            session.set(s);
        }
        return s;
    }

    public static void closeSession()
    {
        Session s = (Session) session.get();
        if (s != null)
            s.close();
        session.set(null);
    }

}