Reflection and access to type parameter?

From:
Jim Garrison <jhg@acm.org>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 22 May 2008 15:28:12 -0500
Message-ID:
<4835d75c$0$5134$4c368faf@roadrunner.com>
Given the SSCCE below, the need to pass A.class and B.class in
lines 25 and 25 seems redundant. However, I can find nothing in
the language that would let that be done in the constructor,
between lines 18 and 19. The obvious would be

      Class<T> x = T.class;

but that of course does not work. Is there any bridge at all
between reflection and generics? I suspect the answer is no
and the code below is the best that can be done, but I'm
not sure.

  1 import java.lang.reflect.Method;
  2 public class TestEnums
  3 {
  4 public static enum A
  5 {
  6 V1,
  7 V2;
  8 }
  9 public static enum B
10 {
11 X1,
12 X2,
13 X3;
14 }
15 public static class C<T extends Enum<?>>
16 {
17 public C(Class<T> x) throws Exception
18 {
19 T[] eVal = x.getEnumConstants();
20 for (Enum<?> v : eVal) System.out.println(v.toString());
21 }
22 }
23 public static void main(String[] args) throws Exception
24 {
25 C<A> ca = new C<A>(A.class);
26 C<B> cb = new C<B>(B.class);
27 }
28 }

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