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Doubt in SessionBean contract  RSS feed

 
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Guys,

Why can't a SessionBean class be declared as final. It is understandable that it can't be abstract, but why not final? Discussions...
 
Joe Harry
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Is there any mention from the specifications that it cannot be declared final? Anyways, the best solution for me would be to try it and I'm going to do that now.
 
Sheriff
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Is there any mention from the specifications that it cannot be declared final?


It's mentioned in the spec:

EJB3 Spec, Section 4.6.2 wrote:The class must be defined as public, must not be final, and must not be abstract. The class must be a top level class.



but why not final?



It's a way to allow EJB container implementations to subclass the bean class if required.
 
Joe Harry
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Good. Thanks for the reference from the Specifications.
 
It is sorta covered in the JavaRanch Style Guide.
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