How can I convert a Java Iterable to a Scala Iterable?

scala, scala-java-interop

Solution

In Scala 2.8 this became much much easier, and there are two ways to achieve it. One that's sort of explicit (although it uses implicits):

import scala.collection.JavaConverters._

val myJavaIterable = someExpr()

val myScalaIterable = myJavaIterable.asScala

EDIT: Since I wrote this, the Scala community has arrived at a broad consensus that `JavaConverters` is good, and `JavaConversions` is bad, because of the potential for spooky-action-at-a-distance. So don't use `JavaConversions` at all!

And one that's more like an implicit implicit: :)

import scala.collection.JavaConversions._

val myJavaIterable = someExpr()

for (magicValue <- myJavaIterable) yield doStuffWith(magicValue)

Problem

Original source