Pattern: Logger with wrong modifier
Issue: -
Logger objects should be declared private, static and final.
This rule has a property: allowProtectedLogger, which defaults to false. Set it to true if you believe subclasses should have access to a Logger in a parent class and that Logger should be declared protected or public.
This rule has a property: allowNonStaticLogger, which defaults to false. Set it to true if you believe a logger should be allowed to be non-static.