Hibernate Tutorial Chapter1 - cant compile HibernateUtil

robbie70 · **Posted:** Sun Jun 29, 2008 10:49 am

Dear Hibernaters,

I'm trying to work through the Tutorial example in Chapter1 and have become stuck. I'm trying to compile HibernateUtil.java but I'm getting compiler errors that the classes referenced in the Import statements cant be found.

The source code is as follows,

Code:

package util;

import org.hibernate.*;
import org.hibernate.cfg.*;

public class HibernateUtil {

   private static final SessionFactory sessionFactory;

   static {
      try {
         // Create the SessionFactory from hibernate.cfg.xml
         sessionFactory = new Configuration().configure().buildSessionFactory();
      }catch (Throwable ex){
         // Make sure you log the exception, as it might be swalledd
         System.err.println("Initial SessionFactory creation failed." + ex);
         throw new ExceptionInInitializerError(ex);
      }
   }

   public static SessionFactory getSessionFactory(){
      return sessionFactory;
   }
}

The Javac statement and error message is shown below.

I cant find the "org.hibernate.*" location. I've looked in the "hsqldb.jar" file but cant see anything there.

Does anyone have any pointers or suggestions please.

Regards
Robert.

robbie70 · **Posted:** Sun Jun 29, 2008 11:22 am

Dear Hibernators, sometimes when you write down the problem it helps you to discover the solution yourself. This is whats happened with me I think. At the beginning of the tutorial it says copy the lib directory from Hibernate to your development src directory, but the file below "hibernate3.jar" is not in this directory its in the top-level hibernate directory. So when I copied the Lib dir I was missing this file and so my Javac complained about the "import" statements. I copied over the Hibernate3 file and re-ran the Javac with the correct -classpath reference to Hibernate3.jar and it complied fine. I hope this can help someone else next time.

Regards
Robert.[/quote]

Cameron McKenzie · **Posted:** Fri Jul 04, 2008 10:33 am

Yes, the most simple problems can sometimes become the most frustrating.

I put together a simple and straight forward tutorial on how to set up your computer with a Hibernate3 environment and get started with Hibernate and JPA. You might find some of the tips and tricks helpful:

http://www.hiberbook.com/HiberBookWeb/learn.jsp?tutorial=01howtogetstartedwithhibernate

robbie70 · **Posted:** Fri Jul 04, 2008 12:12 pm

Thank you Cameron.

The site looks really good.

I've finished the Tutorial 1 on the Hibernate.org site and managed to work my through it (just about!). Still need to do more work on it though and may look through your site suggestion for further reading.

Do you happen to know any good sites for looking at the Spring Framework? I believe Hibernate and Spring are a very common combination these days.

Regards
Robert.

P.S Thanks for your congrats on the Java Ranch certifications site !! :)