Scala集合和Java集合對應轉換關係

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用Scala編碼的時候，經常會遇到scala集合和Java集合互相轉換的case,特意mark一下，加深記憶

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]

可以用 scala.collection.JavaConversions來快速實現轉換，比如把Java的list快速轉為scala的buffer

val scalaList = JavaConversions.asScalaBuffer(javaList)

Scala集合和Java集合對應轉換關係