Java EE 7 Developer Handbook is a book for experienced Java developers, published by PACKT. Author is Peter A. Pilgrim.
The books introduces many important Java EE 7 specifications: CDI, EJB, JPA, Servlets, JMS, Bean Validation, JAX-RS and some other stuff such as WebSockets, HTML5 support and Java Transaction API. Each chapter contains an introduction, source code examples and explanations of most important features and configurations. Source code examples can be downloaded, too.
Cool side note
Introduces and uses Gradle as build system and Arquillian for writing integration tests.