javamap怎么转成scalamap

怎么将java.util.Map>转成scala.collection.mutable.Map>,scala小白求大神！！！急！！！...

怎么将java.util.Map>转成scala.collection.mutable.Map>,
scala小白求大神！！！急！！！

public static void main(String[] args) {
Map map = new HashMap(){{put("1","2");}}; scala.collection.mutable.Map mapTest = JavaConverters.mapAsScalaMapConverter(map).asScala(); Object objTest = Map$.MODULE$.newBuilder().$plus$plus$eq(mapTest.toSeq()); Object resultTest = ((scala.collection.mutable.Builder) objTest).result(); scala.collection.immutable.Map resultTest2 = (scala.collection.immutable.Map)resultTest; System.out.println(resultTest2.keySet());}