How to convert java Map to scala Map of type LinkedHashMap[String,ArrayList[String]]?

Question

from Java API I get

java.util.LinkedHashMap[String,java.util.ArrayList[String]]

which I then need to pass as a parameter to a scala progra

Answer 1

Just import scala.collection.JavaConversions and you should be set :) It performs conversions from Scala collections to Java collections and vice-versa.

If it doesn't work smoothly, try:

val m: Map[String,List[String]] = javaMap

You might also need to convert each one of the lists inside the map:

m.map {
  l => val sl: List[String] = l
  sl
}