package com.util;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {
   private static final SessionFactory sessionFactory;
   
   static{
      try{
         sessionFactory = new Configuration().configure().buildSessionFactory();
      }catch(Throwable ex){
         System.err.println("Initial SessionFactory creation failed.");
         throw new ExceptionInInitializerError(ex);
      }
   }
   
   public static SessionFactory getSessionFactory(){
      return sessionFactory;
   }
}


==============================================

package com.event;

import java.util.Date;

import org.hibernate.Session;

import com.hibernate.Event;
import com.util.HibernateUtil;

public class EventManager {

   public static void main(String[] args) {
      // TODO Auto-generated method stub
      EventManager mgr = new EventManager();
      if(args[0].equals("store")){
         mgr.createAndStoreEvent("My Event", new Date());
      }
      HibernateUtil.getSessionFactory().close();
   }
   
   private void createAndStoreEvent(String title, Date theDate){
      //Session session = HibernateUtil.getSessionFactory().getCurrentSession();
      //the above didn't work for some reason, i have to do the following
      Session session = HibernateUtil.getSessionFactory().openSession();
      session.beginTransaction();
      
      Event theEvent = new Event();
      theEvent.setTitle(title);
      theEvent.setDate(theDate);
      
      session.save(theEvent);

      session.beginTransaction().commit();
   }
}

      Transaction tx = session.beginTransaction();
     
      Event theEvent = new Event();
      theEvent.setTitle(title);
      theEvent.setDate(theDate);
     
      session.save(theEvent);

      tx.commit();