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How to convert enum to string in Scala?

By IncludeHelp Last updated : October 20, 2024

Before learning about the conversion let's discuss for basics about enum and strings.

Scala Enumeration

enum is also known as Enumeration is a set of named constants that are used in modeling in programming languages.

Example

object programming_language extends Enumerations {
    val c, c++, scala, java, javascript, python = Value
}

Scala String

String in Scala is a collection of characters. It is a mutable object i.e. once created the string values cannot be changed.

Example

val string : String = "includehelp.com"

Convert Enum to String

We can convert an enum object to string in Scala. For this, we have to provide a string value to all the named constants which will be then printed. The conversion will be done using the toString() method present in the Scala library.

Syntax

enum_object.value.toString

Scala program to convert enum to string

// Program to convert enum to string in Scala
object MyClass {
    // Creating a Enum
    object programmingLang extends Enumeration {
        val C = Value("C programming language")
        val java = Value("Java programming language")
        val scala = Value("Scala programming language")
        val javascript = Value("JavaScript programming language.")
    }
    def main(args: Array[String]) {
        // Converting to String
        println("The string conversion of each value of Enum is :")
        println(programmingLang.C.toString)
        println(programmingLang.java.toString)
        println(programmingLang.scala.toString)
        println(programmingLang.javascript.toString)
    }
}

Output

The string conversion of each value of Enum is :
C programming language
Java programming language
Scala programming language
JavaScript programming language.

Description

In the above code we have created an enumeration named programmingLang with 4 values and then using the tostring method we have converted enum value to string which is printed to output using println() method.