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Pushkar,

pushkar.p@(protected):
> Can you please tell me whether I can validate a set of radio buttons so that
> atleast one of them is checked, using the struts validation.xml? Is there a
> pre-defined validator method (like required) defined for that or will I have
> to write a custom validator method?

You want to look into using the "validwhen" validator, which requires
some reading. Check out this page
(http://struts.apache.org/1.3.5/faqs/validator.html) and read the
section titled "Designing Complex Validations with validwhen"

You'll want a field set up with a "validwhen" test like:

((*this* != null) or (otherField != null)) or (anotherField != null) ...

- -chris

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