Re: Generics and Enums

On Jul 29, 1:54 pm, Lew <l...@xxxxxxxxxxxxxxxx> wrote:
Roedy Green wrote:
On Sun, 29 Jul 2007 10:55:27 -0700, "amberar...@xxxxxxxxx"
<amberar...@xxxxxxxxx> wrote, quoted or indirectly quoted someone who
said :

I'm trying to write a generic class that takes an Enum as generic
parameter but
I'm not able to compile it:
------------------------------------
public class Foo<T extends Enum> {

Your class is similar to an EnumSet in terms of its Generics. So I
had a peek at how EnumSet does this

public abstract class EnumSet<E extends Enum<E>> extends
AbstractSet<E>
implements Cloneable, java.io.Serializable

This would allow the OP to eliminate the illegal "T.values()" expression and
just call "values()".

--
Lew

I changed "Foo<T extends Enum>" to "Foo<T extends Enum<T>>" but get
the same error.
I also changed T.values() to just values() but that results in a
compile error
saying it cannot find the method values().

.

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