Update transactor docs and switch to compiled examples

akka-docs/java/code/akka/docs/transactor/Increment.java

@@ -0,0 +1,27 @@
+/**
+ * Copyright (C) 2009-2011 Typesafe Inc. <http://www.typesafe.com>
+ */
+
+package akka.docs.transactor;
+
+//#class
+import akka.actor.ActorRef;
+
+public class Increment {
+    private ActorRef friend = null;
+
+    public Increment() {}
+
+    public Increment(ActorRef friend) {
+        this.friend = friend;
+    }
+
+    public boolean hasFriend() {
+        return friend != null;
+    }
+
+    public ActorRef getFriend() {
+        return friend;
+    }
+}
+//#class