Spec-Zone .ru
спецификации, руководства, описания, API
|
An enum is a language construct that is used to define type-safe enumerations which can be used when a fixed set of named values is desired. All enums implicitly extend
java.lang.Enum
. Enums may contain one or more enum constants, which define unique instances of the enum type. An enum declaration defines an enum type which is very similar to a class in that it may have members such as fields, methods, and constructors (with some restrictions).
Since enums are classes, reflection has no need to define an explicit java.lang.reflect.Enum
class. The only Reflection APIs that are specific to enums are
Class.isEnum()
Class.getEnumConstants()
java.lang.reflect.Field.isEnumConstant()
public static final
fields on the enum. The following sections show how to use
Class
java.lang.reflect.Field
For an introduction to enums, see the