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From: Joshua Cranmer <Pidgeot18@verizon.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: eclipse and un-generics
Date: Thu, 20 Oct 2011 17:51:06 -0500
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On 10/20/2011 12:11 PM, Andreas Leitgeb wrote:
> My attempt to use  Class<?>  as argument type in the implementing
> class failed, and I'm not sure I understand the deeper reasons of
> why this has to fail. I.e. why it doesn't just see it as an override
> instead of complaining about a bad overload.

While Class<?> is often treated as being the generic equivalent of 
Class, they're not quite the same thing. Logically, "Class" means "a 
class of anything", while "Class<?>" means "a class of some unknown type".

Indeed, if anything, "Class" is probably closer in typing terms to 
"Class<Object>", although there are a slew of special rules to account 
for the fact that "Class<Object>" is probably very rarely meant.
-- 
Beware of bugs in the above code; I have only proved it correct, not 
tried it. -- Donald E. Knuth