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EJB interview questions
!!! EJB interview questions !!!
What are the Differences between EJB 3.0 and EJB 2.1?
Differences are :
1)EJB 3.0 allows developers to program EJB components as ordinary Java objects with ordinary Java business interfaces rather than as heavy weight components like EJB 2 (home,remote).
2)In EJB 3.0 you can use annotaion or deployment descriptors but in EJB 2 you have to use deployment descriptors.
3) EJB 3 introduced persistence API for database access. In EJB 2 you can use Entity bean.
4) EJB 3.0 is much faster the EJB 2.
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