A great set of Java EE examples (REST, EntityManager, EJB, CDI, Web Services, JMS, Transactions, Security ...), created by the Tomcat EE guys
If you need more, just request an example.
Thanks Jon for the hint!
NEW: Online Workhop Effective WebApps without Frameworks is also coming to: MUC Airport.
Airport MUC workshops: Web (SPA, PWAs, Offline, Desktop, Mobile) Applications Essentials and Effective Web Applications. No migrations. #usetheplatform
Podcast: airhacks.fm and newsletter: airhacks.news
A book about rethinking Java EE Patterns