Scala List mkString() method with a separator with example Last Updated : 13 Aug, 2019 Improve Improve Like Article Like Save Share Report The mkString() method is utilized to display all the elements of the list in a string along with a separator. Method Definition: def mkString(sep: String): String Return Type: It returns all the elements of the list in a string along with a separator. Example #1: // Scala program of mkString() // method // Creating object object GfG { // Main method def main(args:Array[String]) { // Creating a list val m1 = List(2, 3, 5, 7, 8) // Applying mkString method val result = m1.mkString("*") // Displays output println(result) } } Output: 2*3*5*7*8 Example: 2# // Scala program of mkString() // method // Creating object object GfG { // Main method def main(args:Array[String]) { // Creating a list val m1 = List(2, 3, 5, 7, 5) // Applying mkString method val result = m1.mkString("_") // Displays output println(result) } } Output: 2_3_5_7_5 Like Article Suggest improvement Previous Scala List addString() method with a separator with example Next Scala Map toArray() method with example Share your thoughts in the comments Add Your Comment Please Login to comment...