First Cut of a config tool in Scala

Config.scala

class Config(private val envConf: Map[String, _],private val defaultConf: Map[String, _], environment: String) {

  def findInteger(key : String ) : Option[Int] = find[Int](key)

  def findString(key : String ) : Option[String] =  find[String](key)

  private def find[T](key : String ) : Option[T] = {
    val keyList = key.split("\\.").toList
    lookInMap[T](keyList,envConf) match {
      case None => lookInMap(keyList,defaultConf)
      case Some(x : T) => Some(x)
      case _ => None
    }
  }


  private def lookInMap[T](keys : List[String] , dict : Map[String, _ ] ) : Option[T] = {
    if(keys.tail == Nil) {
      dict.get(keys.head) match {
        case Some(x : T) => Some(x)
        case _ => None
      }
    }
    else {
      dict.get(keys.head) match {
        case Some(child : java.util.Map[String, _]) => lookInMap[T](keys.tail,child.asScala)
        case _ => None
      }
    }
  }


}