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Difference Between Ejb 2 and 3

 
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Hi Team,

Is there a major difference between 2 and 3 versions of EJB , as a EJB beginner do we recommend to start with a Ejb 2.0 guide like Head first , please advice.


 
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There are significant differences in both but both have same fundamentals. Mainly EJB 2 entity beans have been replaced with JPA. There are new features added as well like annotations etc...

...as a EJB beginner do we recommend to start with a Ejb 2.0 guide like Head first


There might be so many projects using EJB 2 currently. But if you start with EJB 3 it won't be difficult to work with EJB 2 either
 
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