Search:

Your usage of vowels needs some more stuff: add on one of the enum names like A: vowels.A

Post the full text of any error messages. I don't remember "fails to recognize" as a compiler error.

Please copy the full text of the error messages and post them here.

Try moving the enum outside of the method.
Also see the tutorial: http://docs.oracle.com/javase/tutorial/java/javaOO/enum.html...