+act #3770 Added Java 8 friendly APIs for Actor and FSM

akka-samples/akka-sample-java8/src/main/java/sample/java8/MyActor.java

@@ -0,0 +1,24 @@
+package sample.java8;
+
+//#imports
+import akka.actor.AbstractActor;
+import akka.event.Logging;
+import akka.event.LoggingAdapter;
+import akka.japi.pf.ReceiveBuilder;
+import scala.PartialFunction;
+import scala.runtime.BoxedUnit;
+
+//#imports
+
+//#my-actor
+public class MyActor extends AbstractActor {
+  private final LoggingAdapter log = Logging.getLogger(context().system(), this);
+
+  @Override
+  public PartialFunction<Object, BoxedUnit> receive() {
+    return ReceiveBuilder.
+      match(String.class, s -> s.equals("test"), s -> log.info("received test")).
+      matchAny(o -> log.info("received unknown message")).build();
+  }
+}
+//#my-actor