Description Norbert Kuck 2006-02-01 15:43:00 EST

The Eclipse Java compiler generates an ENUM$VALUES field
even for anonymous enum constant value classes (those
that result from enum constants with class bodies).
Only the (abstract) enum class actually requires an
ENUM$VALUES field in this case - the field in the 
(derived) enum constant class is invisible and thus 
unnecessary. 

The following test class:
  public enum WithMethods {
    VALUE {
      void foo() {};
    };
    abstract void foo();
  }

results in two class files being generated: WithMethods.class
(for the abstract enum class) and WithMethods$1.class (for the
derived enum constant "VALUE" because it has a class body).

Invoking "javap -private" on these two classes yields the 
following results:

Correct:
  public abstract class WithMethods extends java.lang.Enum{
    public static final WithMethods VALUE;
    private static final WithMethods[] ENUM$VALUES;
    static {};
    private WithMethods(java.lang.String, int);
    abstract void foo();
    public static final WithMethods[] values();
    public static final WithMethods valueOf(java.lang.String);
    WithMethods(java.lang.String, int, WithMethods);
  }

Does not need ENUM$VALUES:
  final class WithMethods$1 extends WithMethods{
    private static final WithMethods$1[] ENUM$VALUES;
    WithMethods$1(java.lang.String, int);
    void foo();
  }

Tested on Eclipse Version: 3.1.2 (Build id: M20060118-1600). 
Earlier versions have the same bug.