import scala.actors.Actor /* Test that an actor that hasn't finished prevents termination */ object Test { def main(args: Array[String]) { Actor.actor { try { println("I'm going to make you wait.") Thread.sleep(5000) println("Ok, I'm done.") } catch { case e: Throwable if !e.isInstanceOf[scala.util.control.ControlThrowable] => e.printStackTrace() } } } }