--- old/src/share/classes/java/lang/Enum.java 2009-10-13 16:55:59.000000000 -0700 +++ new/src/share/classes/java/lang/Enum.java 2009-10-13 16:55:58.000000000 -0700 @@ -40,10 +40,17 @@ * Edition, §8.9. * + *
Note that when using an enumeration type in as the type of a
+ * set or as the type of the keys in a map, specialized {@linkplain
+ * java.util.EnumSet set} and {@linkplain java.util.EnumMap map}
+ * implementations are available.
+ *
* @param