Like Java, Kotlin offers enum support, to provide symbols to a related set of states. In the case of Kotlin, enum specifically is a type of class — you use enum class to declare one.

Since an enum is a class, it supports many ordinary features of classes, such as constructors with properties. This is very useful for mapping external definitions to type-safe symbols, such as mapping HTTP response codes to symbols, as we are doing here.

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Abstract Classes Adding Functions to Classes Adding Properties to Classes Chaining to Superclass Functions Checking Inheritance Via is Classes and Instances Constructor Init-Only Parameters Constructors Data Class enum and Functions enum and when() enum Class enum name and ordinal enum valueOf() enum values() Formal Constructor Declaration Hello, World! (In a Class) Inheritance Inheritance and Constructors Inheritance and Functions Inheritance and Overriding Functions Init Block Inner Classes Inner Classes and Outer this Inner Classes and this is and when Manual Casts Nested Classes Nested Classes and Private Access Non-Nested Sealed Classes override is Transitive Overriding Properties Passing this as a Parameter Printing the Class of Numbers Sealed Classes Sealed Classes and when Secondary Constructors Smart Casts The this Pseudo-Property
enum and Functions enum and when() enum Class enum name and ordinal enum valueOf() enum values()
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