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[JPA] I got a exception javax.persistence.RollbackException

 
Runrioter Wung
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Hello,everyone!
I am learning JPA,But when I am coding the first app,I fail...
I use the Hibernate implement of JPA..


When I run it,I got the following exception:
 
Saif Asif
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Hibernate Eclipse IDE Linux
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Its giving you a NullPointerException , maybe you are getting null entity on your entity manager . Also, what is on line 30 of EmployeeServiceTest.java?
 
Runrioter Wung
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Saif Asif wrote:Its giving you a NullPointerException , maybe you are getting null entity on your entity manager . Also, what is on line 30 of EmployeeServiceTest.java?


Here the line 30 is

And I promise that it isn't a null entity.
 
Runrioter Wung
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I have got the answer.
 
Saif Asif
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oh thats great ! What exactly was the issue ?
 
Runrioter Wung
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Saif Asif wrote:oh thats great ! What exactly was the issue ?


The jars included was in different versions. Incompatible.
 
Saif Asif
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I see. Well glad you solved your issue
 
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