Exception javax.persistence.PersistenceException: No Persistence provider for EntityManager?

You have the wrong persistence unit name. Use the one from the xml (i.e. The one defined with persistence-unit name ).

You have the wrong persistence unit name. Use the one from the xml (i.e. The one defined with CreateEntityManagerFactory("JPAExamplePU").

Ok we tried that, and so get the same error. We're thinking it has to do something with the filepath of the persistence. Xml, but netbeans created the pu, so it should be in the correct spot right?

– Marty Nov 11 '10 at 17:51 yes, it is in the correct place. Make sure your changes were deployed. ("the same error" would mean it's still looking for the wrong pu) – Bozho Nov 11 '10 at 17:57.

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