Scala TreeSet filter() method with example

In Scala TreeSet class, the filter() method is utilized to return a new TreeSet that consists of all the elements that satisfy a given predicate.

Method Definition: def filter(pred: (A) => Boolean): TreeSet[A]

Return Type: It returns a new TreeSet that consists of all the elements that satisfy a given predicate.

Example #1:

// Scala program of filter()
// method

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

// Creating object
object GfG
{

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

        // Creating TreeSet
        val t1 = TreeSet(1, 3, 2, 7, 6, 5)

        // Print the TreeSet
        println(t1)

        // Applying filter() method
        val result = t1.filter(x => {x % 2 == 1})

        // Displays output
        println("Odd Elements: " + result)

    }
}

Output:

TreeSet(1, 2, 3, 5, 6, 7)
Odd Elements: TreeSet(1, 3, 5, 7)

Example #2:

// Scala program of filter()
// method

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

// Creating object
object GfG
{

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

        // Creating TreeSet
        val t1 = TreeSet(1, 3, 2, 7, 6, 5)

        // Print the TreeSet
        println(t1)

        // Applying filter() method
        val result = t1.filter(x => {x % 2 == 0})

        // Displays output
        println("Even Elements: " + result)

    }
}

Output:

TreeSet(1, 2, 3, 5, 6, 7)
Even Elements: TreeSet(2, 6)