How to validate a field of a form that is a java method name

[mrisal...@libero.it]

Hi dev,

I would like to know if someone of you knows how to validate that a field in a 
form is a valid java method name.

This field must be camel case, without whitespaces and no special chars.

Someone having an hint on how to implement this validate method with 
FlexibleStringExpander ?

Thanks 
Marco