Galera eu estou fazendo o Curso da SISCOM do t2ti e quando vou fazer conexao com o banco de dados, está ok, mas quando vou executa-lo dá o segunte erro.
Exception in thread “AWT-EventQueue-0” javax.persistence.PersistenceException: No Persistence provider for EntityManager named siscomjavaPU: The following providers:
oracle.toplink.essentials.PersistenceProvider
oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider
Returned null to createEntityManagerFactory.
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:154)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at br.com.siscom.view.BancoView.initComponents(BancoView.java:30)
at br.com.siscom.view.BancoView.(BancoView.java:14)
at br.com.siscom.view.BancoView$1.run(BancoView.java:320)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Uso o Netbeans
Desde já Agradeço
