Kotlin - Enum Classes in Kotlin | Enum Methods | Enum Properties

Hello Friend,
              Today I am going to share about Enum class in Kotlin
 

- How to create/initialize enum classes
- methods and properties of enum classes.



Initializing enums –

	enum class Fruits(val color: String)
	{
	APPLE("RED"),
	BANANA("YELLOW"),
	GRAPES("GREEN");
	}

view raw gistfile1.txt hosted with ❤ by GitHub

Now we can easily access the color of fruits,

val color = Fruits.GRAPES.color

view raw gistfile1.txt hosted with ❤ by GitHub

Enum Methods-

1. values: This method returns a list of all the constants defined within the enum class.
2. valueOf: This methods returns the enum constant defined in enum, matching the input string.  If the constant, is not present in the enum, then an IllegalArgumentException is thrown.

Enum Properties-

1. ordinal: This property stores the ordinal value of the constant, which is usually a zero-based index.
2. name: This property stores the name of the constant.

Below is the example which help us to understand the uses of Enum method and Properties.

	/**
	* Created by Mukesh
	*/
	enum class DAYS {
	SUNDAY,
	MONDAY,
	TUESDAY,
	WEDNESDAY,
	THURSDAY,
	FRIDAY,
	SATURDAY
	}
	fun main() {
	// A simple demonstration of properties and methods
	for (day in DAYS.values()) {
	println("${day.ordinal} = ${day.name}")
	}
	println("${DAYS.valueOf("FRIDAY")}")
	}

view raw Enum.kt hosted with ❤ by GitHub

Outputs:

Hope this will help some one.
Enjoy Coding... :)