Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via redhat.com by Unknown author, 2 years ago
via https://bugzilla.redhat.com/bugzilla/ by Ryan Zhang, 2 years ago
via Stack Overflow by Ady
, 1 year ago
[PersistenceUnit: myJPA] class or package not found
javax.persistence.PersistenceException: [PersistenceUnit: seam22-eclipse-www] Unable to build EntityManagerFactory at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:103) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)[rt.jar:1.6.0_45] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)[rt.jar:1.6.0_45] at java.lang.Thread.run(Thread.java:662)[rt.jar:1.6.0_45] at org.jboss.threads.JBossThread.run(JBossThread.java:122)Caused by: javax.persistence.PersistenceException: [PersistenceUnit: seam22-eclipse-www] Unable to build EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:924) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:899) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:76) at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:200) at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access$600(PersistenceUnitServiceImpl.java:57) at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:99) ... 4 moreCaused by: org.hibernate.MappingException: Could not instantiate id generator [entity-name=com.axa.rps.diy.entity.MsjtDiy] at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:123) at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:195) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:318) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1797) at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:914) ... 9 moreCaused by: java.lang.ClassCastException: org.hibernate.id.enhanced.SequenceStyleGenerator cannot be cast to org.hibernate.id.IdentifierGenerator at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.createIdentifierGenerator(DefaultIdentifierGeneratorFactory.java:115) ... 14 more