gistfile1.scala

scala> import scala.concurrent._
import scala.concurrent._

scala> import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.ExecutionContext.Implicits.global

scala> import scala.concurrent.duration._
import scala.concurrent.duration._

scala> val f1 = future { Thread.sleep(10000000000l); "a" }
warning: there were 1 deprecation warning(s); re-run with -deprecation for details
f1: scala.concurrent.Future[String] = scala.concurrent.impl.Promise$DefaultPromise@379e3bdb

scala> val f2 = future { "b" }
warning: there were 1 deprecation warning(s); re-run with -deprecation for details
f2: scala.concurrent.Future[String] = scala.concurrent.impl.Promise$DefaultPromise@8c24496

scala> val f3 = future { "c" } 
warning: there were 1 deprecation warning(s); re-run with -deprecation for details
f3: scala.concurrent.Future[String] = scala.concurrent.impl.Promise$DefaultPromise@7d2ba6d7

scala> val combinedFuture = Future.sequence(List(f1, f2, f3))
combinedFuture: scala.concurrent.Future[List[String]] = scala.concurrent.impl.Promise$DefaultPromise@5ddfba0e

scala> Await.result(combinedFuture, 10.seconds)
java.util.concurrent.TimeoutException: Futures timed out after [10 seconds]
  at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
  at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
  at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:111)
  at scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
  at scala.concurrent.Await$.result(package.scala:111)
  ... 32 elided