This week's book giveaway is in the Spring forum. We're giving away four copies of Pro Spring MVC with WebFlux: Web Development in Spring Framework 5 and Spring Boot 2 and have Marten Deinum & Iuliana Cosmina on-line! See this thread for details.
This book is still focused on the 1.1 stuff, but when the time comes to use a class you haven't used before or maybe the method of a class you haven't used before, this book can't be beat. Not only does it have thorough descriptions, but it gives examples for every method. That's something you don't find in the javadocs! This book covers the non GUI core library: io, lang, math, net, text and util.(trailboss Jan 2000)