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Finding annotations from subclass or child class

Eric Juneau
Greenhorn

Joined: Jul 13, 2009
Posts: 28
Hi, this question has probably been answered somewhere, but I wasn't able to come up with good search terms for it. Basically, I am trying to get the annotations for fields in a subclass in the parent class. Example:


The problem is that there are no annotations present for the fields in the superclass's validate. I know that child classes won't inherit annotations of the parent class. But shouldn't it work the other way around?
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19655
    
  18

What's the definition of @MyAnnotation? More specifically, what are its meta annotations (@Documented, @Inherited, @Retention, @Target, etc)?


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Eric Juneau
Greenhorn

Joined: Jul 13, 2009
Posts: 28
MyAnnotation is defined as such:

Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19655
    
  18

Check out the possible values of RetentionPolicy, and figure out which one you need to use with the @Retention meta annotation.
Eric Juneau
Greenhorn

Joined: Jul 13, 2009
Posts: 28
I added

to my annotation and that worked. Thanks.
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19655
    
  18

You're welcome
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Finding annotations from subclass or child class
 
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