https://www.humblebundle.com/books/java-books

=USD1 Think Java Java Generics and Collections Java in a Nutshell 6th ed. Java Pocket Guide 4th ed. Java Message Service 2nd ed.

=USD8 Learning Java 4th ed. Java Threads 3rd ed. Java 8 Lambdas RESTful Java with JAX-RS 2.0 2nd ed. Minecraft Modding with Forge

=USD15 Java Network Programming 4th ed. Java Web Services: Up and Running 2nd ed. Java Cookbook 3rd ed. Java Performance: The Definitive Guide Jenkins: The Definitive Guide