Merge paradox/scala/futures.md and java/futures.md (#23397)

akka-docs/src/test/java/jdocs/future/ActorWithFuture.java

@@ -0,0 +1,17 @@
+package jdocs.future;
+
+//#context-dispatcher
+import akka.actor.AbstractActor;
+import akka.dispatch.Futures;
+
+public class ActorWithFuture extends AbstractActor {
+  ActorWithFuture(){
+    Futures.future(() -> "hello", getContext().dispatcher());
+  }
+
+  @Override
+  public Receive createReceive() {
+    return AbstractActor.emptyBehavior();
+  }
+}
+// #context-dispatcher