Scala Map filter() method with example

Last Updated : 13 Aug, 2019

The filter() method is utilized to select all elements of the map which satisfies a stated predicate.

Method Definition: def filter(p: ((A, B))=> Boolean): Map[A, B]

Return Type: It returns a new map consisting all the elements of the map which satisfies the given predicate.

Example #1:

// Scala program of filter() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating map 
        val m1 = Map("geeks" -> 5, "for" -> 3) 
          
        // Applying filter method 
        val result = m1.filter(x => x._1 == "geeks" && x._2 == 5) 
          
        // Displays output 
        println(result) 
      
    } 
} 

Output:

Map(geeks -> 5)

Example #2:

// Scala program of filter() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating map 
        val m1 = Map("geeks" -> 5, "for" -> 3) 
          
        // Applying filter method 
        val result = m1.filter(x => x._1 == "for" && x._2 == 5) 
          
        // Displays output 
        println(result) 
      
    } 
} 