Re: scope rules in enums

Lew <>
Fri, 10 Jul 2009 09:13:43 -0400
Roedy Green wrote:

On Thu, 9 Jul 2009 11:27:23 -0400, "Scott A. Hightower"
<> wrote, quoted or indirectly quoted someone
who said :

An enum is implicitly static, but I found nothing special about the access
modifiers (public, protected, private, default) in the language spec as
regards enums.

In some ways the enum constants are subclasses of the enum as a whole.
They can override methods of the enum as a whole. You can have
abstract methods in the enum as a whole implemented by the enum

In other ways they are like inner classes.

You can cheat by disassembling and see how enums are implemented, but
I have never sat down and figured out if scope rules follow that
implementation. see

The scope rules should exist independent of that bit of bailing wire.

As mentioned upthread, if an enum constant has a body the constant is
implemented as an anonymous subclass of the enclosing enum, and the rules are
the normal rules for anonymous classes (in a static context) that extend the
enclosing class. If a constant does not have an enum body then the constant
is implemented as an instance of the enclosing enum itself. The JLS is very
detailed on this.


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