Let’s have a look at enums in kotlin. Unlike Java, where enum is a Type; in Kotlin, enums are classes

Defining an enum

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enum class Direction {
    NORTH, SOUTH, WEST, EAST
}

Defining an enum with a variable

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enum class Direction(val shortName: Char) {
    NORTH('N'), SOUTH('S'), WEST('W'), EAST('E')
}

Template Method pattern in Enum

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enum class Direction(val shortName: Char) {
    NORTH('N') {
        override fun move() = "Moving in North Direction"
    },
    SOUTH('S') {
        override fun move() = "Moving in South Direction"
    },
    WEST('W'){
        override fun move() = "Moving in West Direction"
    },
    EAST('E'){
        override fun move() = "Moving in East Direction"
    };
    abstract fun move(): String
}

Companion methods in enum

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enum class Direction(val shortName: String) {
  NORTH("N"), SOUTH("S"), WEST("W"), EAST("E");
  companion object {
      fun valueOfIgnoreCase(name: String) = valueOf(name.uppercase(Locale.getDefault()))
      fun valueOfShortName(shortName: String): Direction? = Direction.values().find { it.shortName == shortName }
  }
}