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Editorial Team
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Asked: 2026-06-02T00:35:01+00:00

Do I need hands on experience in following before starting EJB 3. RMI Design

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Do I need hands on experience in following before starting EJB 3.

  1. RMI
  2. Design Patterns like facade,dependency injection
  3. JPA
  4. EJB 2 (I read some tutorials and observed that they all compare EJB 3 with EJB 2. So they skip basic concept of EJB.)
  5. Annotations
  6. Anything else, I missed

If hands on exp is required please suggest some source/tutorial for quick overview. So I can start EJB 3 asap.

  • I am clear with dependency injection & facade patterns and annotations.
  • I know basic of RMI. But I am not confident in them.
  • I never worked with JPA.
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  1. Editorial Team

    Ejb2 knowledge is absolutely not required. Better yet, EJB2 knowledge isn’t even recommended.

    Home interfaces, Entity Beans (not to be confused with JPA entities) and portable remote objects are things that only burden you and there’s no benifit to know about that in EJB3.

    Best to forget EJB2 ever existed and directly learn things the EJB3 way.

    RMI is also not a prerequisite. It’s a special case for IFF you want to use remote beans, and even then you don’t have to know a lot about RMI in order to use it.

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