move code to src/test

* so that it compiles and tests pass
* fix some additional snip references in getting started

akka-docs/src/test/java/jdocs/pattern/BackoffSupervisorDocTest.java

@@ -0,0 +1,49 @@
+/**
+ * Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
+ */
+package jdocs.pattern;
+
+import akka.actor.*;
+import akka.pattern.Backoff;
+import akka.pattern.BackoffSupervisor;
+import akka.testkit.TestActors.EchoActor;
+//#backoff-imports
+import scala.concurrent.duration.Duration;
+//#backoff-imports
+
+import java.util.concurrent.TimeUnit;
+
+public class BackoffSupervisorDocTest {
+
+  void exampleStop (ActorSystem system) {
+    //#backoff-stop
+    final Props childProps = Props.create(EchoActor.class);
+
+    final Props  supervisorProps = BackoffSupervisor.props(
+      Backoff.onStop(
+        childProps,
+        "myEcho",
+        Duration.create(3, TimeUnit.SECONDS),
+        Duration.create(30, TimeUnit.SECONDS),
+        0.2)); // adds 20% "noise" to vary the intervals slightly
+
+    system.actorOf(supervisorProps, "echoSupervisor");
+    //#backoff-stop
+  }
+
+  void exampleFailure (ActorSystem system) {
+    //#backoff-fail
+    final Props childProps = Props.create(EchoActor.class);
+
+    final Props  supervisorProps = BackoffSupervisor.props(
+      Backoff.onFailure(
+        childProps,
+        "myEcho",
+        Duration.create(3, TimeUnit.SECONDS),
+        Duration.create(30, TimeUnit.SECONDS),
+        0.2)); // adds 20% "noise" to vary the intervals slightly
+
+    system.actorOf(supervisorProps, "echoSupervisor");
+    //#backoff-fail
+  }
+}