Scala program to get the first element of Set using the head property

Here, we are going to learn how to get the first element of Set using the head property in Scala programming language?
Submitted by Nidhi, on June 25, 2021 [Last updated : March 11, 2023]

Scala - Getting Set's First Element (Using Head Property)

Here, we will create a set of strings using the Set collection class. Then we will get the first element of the created set using the head property and print the result on the console screen.

Scala code to get the first element of Set using the head property

The source code to get the first element of Set using the head property is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to get the first element
// of Set using head property

import scala.collection.immutable._

object Sample {
  // Main method
  def main(args: Array[String]) {
    //Set of cities.
    val cities = Set("DELHI", "MUMBAI", "AGRA", "GWALIOR")

    println("First element: " + cities.head);
  }
}

Output

First element: DELHI

Explanation

Here, we used an object-oriented approach to create the program. And, we imported Collection classes using below statement,

import scala.collection.immutable._

Here, we also created a singleton object Sample and defined the main() function. The main() function is the entry point for the program.

In the main() function, we created a set of cities. Then we got the first element of set cities using the head property and print the name of the first city on the console screen.

Scala Set Programs »



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