Confused about why Im getting this error

[Thomas Polliard]

Doing an example trying to learn OpenJPA and JPA I ran into a strange problem.

java.lang.ClassNotFoundException: com.arjuna.jta.JTA_TransactionManager
java.lang.ClassNotFoundException: com.bluestone.jta.SaTransactionManagerFactory
java.lang.ClassNotFoundException: org.openejb.OpenEJB
java.lang.ClassNotFoundException: com.sun.jts.jta.TransactionManagerImpl
java.lang.ClassNotFoundException: 
com.inprise.visitransact.jta.TransactionManagerImpl


I am not using "Any of these yet for some reason, I am getting this error"

The problem is Only when I run the main program:

Main.java
package com.trukoda.examples.jpa;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

public class Main {
        public static void main(String[] args) {
                EntityManagerFactory factory = 
Persistence.createEntityManagerFactory("ExampleJPA");
                Account user1 = new Account("polliard");
                Account user2 = new Account("mcclung");
                
                Host host1 = new Host("uranium");
                Host host2 = new Host("thorium");
                
                EntityManager em = factory.createEntityManager();
                
                em.getTransaction().begin();
                em.persist(host1);
                em.persist(host2);
                em.getTransaction().commit();
        }
}

Any idea why this this would causes classes I am not referencing from being 
loaded.

I am including the following in my classpath:

.:/Users/polliard/Library/Java/Derby/10.5.3.0/derby.jar:/Users/polliard/Library/Java/Openjpa/2.0-M3/openjpa-all-2.0.0-M3.jar

The two accounts (Account and Host) are basic Entities and the database gets 
created without issue using the mappingtool.

Thanks for any assistance,

Thomas