NetBeans can give a warning if an overridable method is called from a constructor. That's OK.  One way to "disable" the warning is to locally override the method with a final method.

I would expect to be able to do the same by making the entire class final, which would prevent any subtype being created, hence all methods become implicitly final and non-overridable. In this case, I would expect that warning to be suppressed, but it is not.