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Scala program to check a vector is empty or not

Here, we are going to learn how to check a vector is empty or not in Scala programming language?
Submitted by Nidhi, on June 12, 2021 [Last updated : March 11, 2023]

Scala - Check an Empty Vector

Here, we will create two objects of Vector collection. Then we will check a vector is empty or not using the isEmpty() method. After that, we will print the appropriate message on the console screen.

The Vector is an immutable data structure. We can access vector elements randomly. It extends an abstract class AbstractSeq and IndexedSeq trait. We use the Vector collection to store a large number of elements.

Scala code to check a vector is empty or not

The source code to check a vector 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 a vector
// is empty or not

import scala.collection.immutable._

object Sample {
  // Main method
  def main(args: Array[String]) {
    var vector1 = Vector();
    var vector2: Vector[String] = Vector("ABC", "LMN", "PQR", "XYZ");

    if (vector1.isEmpty)
      println("vector1 is empty collection");
    else
      println("vector1 is not empty collection");

    if (vector2.isEmpty)
      println("vector2 is empty collection");
    else
      println("vector2 is not empty collection");
  }
}

Output

vector1 is empty collection
vector2 is not empty collection

Explanation

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

import scala.collection.immutable._

And, 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 vectors vector1 and vector2 using Vector collection. Then we checked vector is empty or not using the isEmpty() method and print the appropriate message on the console screen.

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