SOS~Exception in thread "main" org.hibernate.HibernateException: Hibernate Dialect must be explicitly set

Question

import   org.hibernate.Session; 
import   org.hibernate.SessionFactory; 
import   org.hibernate.cfg.Configuration; public   class   T   { 
public   static   void   main(String[]   args)   { 
Configuration   con   =   new   Configuration().Configure(); 
SessionFactory   sf   =   con.buildSessionFactory(); 
Session   s   =   sf.openSession(); System.out.println(s.isOpen()); 
} 
} 

Answer 1

haha

Answer 2

import       org.hibernate.Session;   
import       org.hibernate.SessionFactory;   
import       org.hibernate.cfg.Configuration;   public       class       T       {   
public       static       void       main(String[]       args)       {   
Configuration       con       =       new       Configuration().Configure();   
SessionFactory       sf       =       con.buildSessionFactory();   
Session       s       =       sf.openSession();   System.out.println(s.isOpen());   
}   
}