Question on generics

[Dimitris Andreou]

Hi,

Sorry, this question isn't related to google collections, but I figure
there are many generics experts listening. I want to verify whether,
given this definition:

interface X<T extends X<T>> { }

One could declare a variable of type X.

X<...> var = null;

Can someone replace the "..." with something, without using "?", and
have it compile without errors/warnings?

The only way I can do it is by cheating:

<T extends X<T>> void method(T t)
X<T> x = null; //this compiles
}

But then I don't know how to call this method without errors/warnings :)

Could this be impossible??

Thanks,
Dimitris

[Dimitris Andreou]

Forwarding this so nobody else bothers to answer, thanks again :)

Regards,
Dimitris

---------- Forwarded message ----------
From: Nikolas Everett <nik...@gmail.com>
Date: 2009/12/3
Subject: Re: [google-collections] Question on generics
To: Dimitris Andreou <jim.a...@gmail.com>


This compiles:

interface X<T extends X<T>> { }

class Y implements X<Y> { }

public void main() {
  X<Y> x = null;

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