Scala immutable TreeSet isEmpty() method

In Scala immutable TreeSet class isEmpty() is utilized to check if the TreeSet is empty or not.

Method Definition: def isEmpty: Boolean

Return Type: It returns true if the TreeSet is empty or else it returns false.

Example #1:

// Scala program of isEmpty()
// method

// Import TreeSet
import scala.collection.immutable._

// Creating object
object GfG
{

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

        // Creating TreeSet
        val q1 = TreeSet(1, 2, 3, 4, 5)

        // Print the TreeSet
        println(q1)

        // Applying isEmpty method
        val result = q1.isEmpty

        // Displays output
        print("TreeSet is empty: " + result)

    }
}

Output:

TreeSet(1, 2, 3, 4, 5)
TreeSet is empty: false

Example #2:

// Scala program of isEmpty()
// method

// Import TreeSet
import scala.collection.immutable._

// Creating object
object GfG
{

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

        // Creating TreeSet
        val q1 = TreeSet[Int]()

        // Print the TreeSet
        println(q1)

        // Applying isEmpty method
        val result = q1.isEmpty

        // Displays output
        print("TreeSet is empty: " + result)

    }
}

Output:

TreeSet()
TreeSet is empty: true