Scala SortedMap keys() method with example

Last Updated : 03 Nov, 2019

The keys() method is utilized to give an iterator over all the keys of the SortedMap.

Method Definition: def keys: Iterable[A]

Return Type: It returns an iterator over all the keys of the SortedMap.

Example #1:

// Scala program of keys() 
// method 
import scala.collection.immutable.SortedMap 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating SortedMap 
        val m1 = SortedMap("geeks" -> 5, "for" -> 3, "cs" -> 2) 
          
          
        // Applying keys method  
        val result = m1.keys 
          
        // Displays output 
        println(result) 
    } 
} 

Output:

Set(cs, for, geeks)

Example #2:

// Scala program of keys() 
// method 
import scala.collection.immutable.SortedMap 
  
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating SortedMap 
        val m1 = SortedMap("geeks" -> 5, "for" -> 3, "geeks" -> 5) 
          
          
        // Applying keys method  
        val result = m1.keys 
          
        // Displays output 
        println(result) 
    } 
} 