Documenting Validator Resource Keys

[Nick Heudecker]

I'm always running into problems trying to determine resource keys for
validators, in particular with EmailAddressValidator returning
"EmailAddressPatternValidator" as its resource key.

Is there any objection to making the validator resorce keys constants in the
respective validator classes so JavaDoc can document them?  I'd be content
with something like:

private static final String RESOURCE_KEY = "EmailAddressValidator";

but AlMaw also mentioned using Classes.simpleName(...).

-Nick