JSON processing is well integrated with JAX-RS 2.0. "Hello JSON" in 3 minutes:
Starring the Maven 3 Archetype: https://github.com/AdamBien/javaee7-essentials-archetype
NEW workshop: Building HTML 5 Applications Without Frameworks, Full week in December 2016: from Java EE 7 Bootstrap, Effective, Architectures over Testing to Microservices
On demand workshops: Java EE 7: Bootstrap, Effective, Testing and Microservices available for streaming.