public class HibernateUtils {		private static SessionFactory sf;		static{		sf = new Configuration().configure().buildSessionFactory();	}		public static SessionFactory getSessionFactory(){		return sf;	}		public static Session getSession(){		return sf.openSession();	}		public static void closeSession(Session session){		session.close();	}		public static void closeResource(Session session){		session.close();		sf.close();	}}