java与scala集合相互转换

scala.collection.Iterable <=> java.lang.Iterable

scala.collection.Iterable <=> java.util.Collection

scala.collection.Iterator <=> java.util.{ Iterator, Enumeration }

scala.collection.mutable.Buffer <=> java.util.List

scala.collection.mutable.Set <=> java.util.Set

scala.collection.mutable.Map <=> java.util.{ Map, Dictionary }

scala.collection.mutable.ConcurrentMap <=> java.util.concurrent.ConcurrentMap

scala.collection.Seq         => java.util.List

scala.collection.mutable.Seq => java.util.List

scala.collection.Set         => java.util.Set

scala.collection.Map         => java.util.Map

java.util.Properties         => scala.collection.mutable.Map[String, String]