Scala Queue head() method with example

The head() method is utilized return the first element of the queue.

Method Definition: def head: A

Return Type: It returns the first element of the queue.

Example #1:

// Scala program of head()
// method

// Import Queue
import scala.collection.mutable._

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating queues
        val q1 = Queue(1, 3, 2, 7, 6, 5)

        // Print the queue
        println(q1)

        // Applying head method
        val result = q1.head

        // Display output
        print("First element of the queue: " + result)

    }
}

Output:

Queue(1, 3, 2, 7, 6, 5)
First element of the queue: 1

Example #2:

// Scala program of head()
// method

// Import Queue
import scala.collection.mutable._

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating queues
        val q1 = Queue(5, 3, 2, 7, 6, 1)

        // Print the queue
        println(q1)

        // Applying head method
        val result = q1.head

        // Display output
        print("First element of the queue: " + result)

    }
}

Output:

Queue(5, 3, 2, 7, 6, 1)
First element of the queue: 5