JPA entity autodetection is not working when running in standalone Java SE, "java.lang.IllegalArgumentException: Unknown entity" is thrown

Solution Verified - Updated -

Issue

  • Following exception is being thrown, isn't Java Persistence API supposed to automatically detect deployed entities?

    java.lang.IllegalArgumentException: Unknown entity: xxx
        at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:223)
        at org.apache.jsp.testJPA_jsp._jspService(testJPA_jsp.java:133)

Environment

  • Java Persistence API (JPA)
  • Standalone Edition (SE) application

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