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Java language enumeration types have an ordinal() method that returns the numerical position of each enumeration constant in its class declaration.

Wiki MarkupThe _Java Language Specification_ \[ [JLS 2005|AA. References#JLS 05]\] [§8] §8.9, "Enums,"|http://java.sun.com/docs/books/jls/third_edition/html/classes.html#8.9] does not specify the use of {{ordinal()}} in programs. However, using the {{ordinal()}} method to derive the value associated with an {{enum}} constant is error prone and should be avoided. unmigrated-wiki-markup

According to the Java API \[ [API 2006|AA. References#API 06]\], {{public final int ordinal()}}:

Returns the ordinal of the enumeration constant (its position in its enum declaration, where the initial constant is assigned an ordinal of zero). Most programmers will have no use for this method. It is designed for use by sophisticated enum-based data structures, such as EnumSet and EnumMap.

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[[JLS 2005AA. References#JLS 05]]	[§8.9, "Enums"	http://java.sun.com/docs/books/jls/third_edition/html/classes.html#8.9]
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DCL54-J. Enable compile-time type checking of varargs types      01. Declarations and Initialization (DCL)      DCL02-J. Declare all enhanced for statement loop variables final