Re: Using an enum in a constructor

Joshua Cranmer <>
Thu, 20 Sep 2007 23:38:33 GMT
Roedy Green wrote:

On Thu, 20 Sep 2007 20:33:13 GMT, Wojtek <> wrote, quoted
or indirectly quoted someone who said :

public class Foo
 private static final int DEFAULT_LENGTH = 30;
 private Type ivType;
 private int ivLength;

 public enum Type

You have this as a nested inner instance class. I have always made my
enums separate top level classes. Perhaps you are allowed to define
them as static inner classes. Perhaps there are magic exceptions made
for enums to the usual nesting rules. Is there a language lawyer

JLS ?8.9 (I think; I haven't checked since Wednesday) says that all
enums are implicitly static classes and not inner instance classes.

public class Foo
   public enum Type { }


public class Foo
   public static enum Type { }

are equivalent.

Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth

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