The top of most mentioned books on stackoverflow.com

Top 5:
#1 Working Effectively with Legacy Code
Michael C. Feathers
#2 Design Patterns
Ralph Johnson, Erich Gamma, John Vlissides, Richard Helm
#3 Clean Code
Robert C. Martin
#4 Java concurrency in practice
Brian Goetz, Tim Peierls
#5 Domain-driven Design
Eric Evans

See more here http://www.dev-books.com/

Spring Boot: A Quick Start

Hmm spring configuration is getting better)
https://dzone.com/articles/spring-boot-a-quick-start

Scrum in few words

Note about scrum. It is mostly based on Scum Guide but in much shorter way and with some examples from my experience.

Spring Transactions management tips

In this article I will describe ways of managing transactions in Spring. And will share some useful notes based on my experience

JDK 9 Is Feature Complete!

https://dzone.com/articles/jdk-9-is-feature-complete

Is Inheritance Dead? A Detailed Look Into the Decorator Pattern

https://dzone.com/articles/is-inheritance-dead

Evening puzzle)