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Scala program to check given set is empty or not

Here, we are going to learn how to check given set is empty or not in Scala programming language?
Submitted by Nidhi, on June 25, 2021 [Last updated : March 11, 2023]

Scala - Check Set is Empty?

Here, we will create two sets using the Set collection class. Then we will check created set is empty or not using the isEmpty property and print an appropriate message on the console screen.

Scala code to check given set is empty or not

The source code to check given set is empty or not is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to check given set
// is empty or not

import scala.collection.immutable._

object Sample {
  // Main method
  def main(args: Array[String]) {
    //empty set.
    val emptySet = Set();

    // Set of cities.
    val cities = Set("DELHI", "MUMBAI", "AGRA", "GWALIOR")

    if (emptySet.isEmpty)
      println("Empty Set");
    else
      println("Non-empty Set");

    if (cities.isEmpty)
      println("Empty Set");
    else
      println("Non-empty Set");
  }
}

Output

Empty Set
Non-empty Set

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 two sets emptySet and cities. Then we checked created set is empty or not using the isEmpty property and print an appropriate message on the console screen.

Scala Set Programs »

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