Scala Concordance List

//read a file and build a concordance list of the tokens in the file
  //there's gotta be a nicer way to do this
  def two(fileName:String): Unit = {
    val scanner = new Scanner(new File(fileName))
    val concordanceList = new mutable.HashMap[String, Int]()
    while(scanner hasNext) {
      scanner.nextLine()
        .split(" ")
        .foreach {
          word  => if(concordanceList contains word) {
            concordanceList.update(word, concordanceList(word) + 1)
          } else {
            concordanceList += (word -> 1)
          }
        }
    }
    println(concordanceList)
  }