Java EE 7 is exciting, but combining this lean platform with Java 8 brings even more power with less code. In this free JavaMagazine article "Concurrent Programming with Java EE 7 and Java SE 8 I implemented some examples (23 listings :-)) to discuss this "synergy". For more concurrency control and statistics take a look at https://github.com/AdamBien/porcupine.
For even more Java EE 7 + Java 8 concurrency see you at Java EE Workshops at Munich Airport, Terminal 2 or Virtual Dedicated Workshops / consulting We will particularly focus on resiliency and concurrency during the Java EE Microservices workshop.
NEW: Online Workhop Effective WebApps without Frameworks is also coming to: MUC Airport.