How can I create "static" method for enum in Kotiln?

Question

Kotlin already have number of "static" methods for enum class, like values and valueOf

For example I have enum

public enum class CircleType {     FIRST     SECOND     THIRD } 

How can I add static method such as random(): CircleType? Extension functions seems not for this case.

Answer 1

Just like with any other class, you can define a class object in an enum class:

enum class CircleType {   FIRST,   SECOND,   THIRD;   companion object {      fun random(): CircleType = FIRST // http://dilbert.com/strip/2001-10-25   } } 

Then you'll be able to call this function as CircleType.random().

EDIT: Note the commas between the enum constant entries, and the closing semicolon before the companion object. Both are now mandatory.