Groovy in Action
Groovy in Action, Second Edition is a thoroughly-revised, comprehensive guide to Groovy programming, introducing Groovy by example and presenting lots of reusable code. It introduces Java developers to the dynamic features that Groovy provides, and shows them how to apply Groovy to a range of tasks including building new apps, integration with existing code, and DSL development.
JavaFX 8 Refcard
JavaFX is the new UI toolkit for Java-based client applications running on desktop, embedded, and mobile devices. It is part of the JDK 8 and is provided as a pure Java API. This Dzone Refcard gives you what you need to start using the powerful JavaFX 8 UI and graphics tool with code snippets and visual examples of shapes and controls.