error at the start Java Desktop Database Application

[zizitop]

Hi! I had a problem: I created a Java Desktop Database Application step-by-step from tutorial (http://www.netbeans.org/kb/60/java/gui-db.html) in the netbeans 6.1, after compile and run the programm, an environment showed a next error:

compile:
run:
30.10.2008 16:32:31 org.jdesktop.application.Application$1 run
SEVERE: Application class carsdb.CarsDBApp failed to launch
javax.persistence.PersistenceException: No Persistence provider for EntityManager named carPU: 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 carsdb.CarsDBView.initComponents(CarsDBView.java:288)
at carsdb.CarsDBView.<init>(CarsDBView.java:36)
at carsdb.CarsDBApp.startup(CarsDBApp.java:19)
at org.jdesktop.application.Application$1.run(Application.java:171)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Exception in thread "AWT-EventQueue-0"
java.lang.Error: Application class carsdb.CarsDBApp failed to launch
at org.jdesktop.application.Application$1.run(Application.java:177)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named carPU: 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 carsdb.CarsDBView.initComponents(CarsDBView.java:288)
at carsdb.CarsDBView.<init>(CarsDBView.java:36)
at carsdb.CarsDBApp.startup(CarsDBApp.java:19)
at org.jdesktop.application.Application$1.run(Application.java:171)
... 8 more
BUILD SUCCESSFUL (total time: 8 minutes 54 seconds)

Say please, that it is needed to do to correct mistake?
NetBeans Packs Download all (219 MB) + downloaded and installing java DB.
Thank you[/url]

[Patrick Keegan]

zizitop wrote:

[zizitop]

Hi!.I checked is or this library connected to project, and she appeared connected. Possibly,except for IDE NetBeans is something needed yet to set?Patrick, I went to your blog and on the resulted example created project: "A Personal Data Storage Application With Embedded Java DB" which as well as in previous case not running (also started the prepared project rolls from a site). Maybe I'm wrong, or not in the order set of Java?(IDE, jdk-6u10-windows-i586-p,javadb_10_4_1_3)?

[babicka_baba]

I had the very same problem with freshly installed NetBeans 6.8 - the full package. The toplink library is correctly referenced. Tried changing persistence library to Hibernate in the persistence.xml desginer, but that did not help. Problem occurs both for accesing a MySQL database and for the sample derby database provided with the IDE.

NetBeans use JDK 1.6.0_17 as provided with the full package.

[Mvek]

Have someone get to some solution? I am not using Toplink, I am trying some tutorial about CRUD with Derby embbed. It worked, but after some time, I get also the "No Persistence provider for EntityManager ..." error.