Hi,
I am using hibernate to create mapping between my JPA classes and MYSQL database.
But I always get the following error while instantiating the EntityManager class

Quote:

EntityManager entityManager = Persistence.createEntityManagerFactory("CustomerLibraryPU").createEntityManager();

java.lang.NoSuchMethodError: org.hibernate.cfg.AnnotationConfiguration.getReflectionManager()Lorg/hibernate/reflection/ReflectionManager;

I think it is because of the different versions of the Hibernate jars I am using ,
needed more information related to the compatibility matrix for the different hibernate jars:
just mentioning the hibernate jar versions I am using:
hibernate3.jar -->Implementation-Version: 3.2.5.ga
hibernate-annotations.jar -->Implementation-Version: 3.3.1.GA
hibernate-commons-annotations.jar -->Version: 3.0.0.GA
hibernate-entitymanager.jar --> Version: 3.2.0.GA
hibernate-validator-3.0.0.ga.jar --> Version: 3.0.0.GA
jboss-archive-browsing.jar --> Implementation-Version: 2.0.2.Alpha
I am using netbeans IDE for my application development.

adding the "Stack trace" for full description about the issue
Stack trace:
Caused: java.lang.NoSuchMethodError: org.hibernate.cfg.AnnotationConfiguration.getReflectionManager()Lorg/hibernate/reflection/ReflectionManager;
at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:156)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:847)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:178)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:235)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:120)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:51)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:33)
at com.sdx.cps.customerviewer.CustomerTopComponent.callDB(CustomerTopComponent.java:155)
at com.sdx.cps.customerviewer.CustomerTopComponent.<init>(CustomerTopComponent.java:33)
at com.sdx.cps.customerviewer.CustomerTopComponent.getDefault(CustomerTopComponent.java:90)
Caused: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.netbeans.modules.settings.convertors.XMLSettingsSupport$SettingsRecognizer.createFromMethod(XMLSettingsSupport.java:670)
Caused: java.io.IOException: Error reading MultiFileObject@82a13a[Windows2Local/Components/CustomerTopComponent.settings]
at org.netbeans.modules.settings.convertors.XMLSettingsSupport$SettingsRecognizer.createFromMethod(XMLSettingsSupport.java:678)
at org.netbeans.modules.settings.convertors.XMLSettingsSupport$SettingsRecognizer.instanceCreate(XMLSettingsSupport.java:581)
at org.netbeans.modules.settings.convertors.SerialDataConvertor$SettingsInstance.instanceCreate(SerialDataConvertor.java:420)
at org.netbeans.core.windows.persistence.PersistenceManager.getTopComponentPersistentForID(PersistenceManager.java:530)
at org.netbeans.core.windows.persistence.PersistenceManager.getTopComponentForID(PersistenceManager.java:640)
at org.netbeans.core.windows.PersistenceHandler.getTopComponentForID(PersistenceHandler.java:457)
at org.netbeans.core.windows.PersistenceHandler.load(PersistenceHandler.java:160)
at org.netbeans.core.windows.WindowSystemImpl.load(WindowSystemImpl.java:77)
at org.netbeans.core.NonGui$2.run(NonGui.java:177)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
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)
[catch] at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)