resources

Programming Books 

Java

1. Thinking in Java (4th Edition), Bruce Eckel.  
2. Effective Java, Joshua Bloch, Pearson.
3. Thinking in Patterns with Java, Bruce Eckel.
4. Java Design Patterns Essential, Tony Bevis, Ability First Limited.
5. Clean Code: A Handbook of Agile Software Craftsmanship,  Robert C. Martin,Prentice Hall.
6. Java 8 in Action: Lambdas, Streams, and functional-style programming, Raoul-Gabriel Urma, Mario Fusco, and Alan Mycroft, Manning.
7. Efficient Android Threading Asynchronous Processing Techniques for Android Application, Anders Goransson,O'Reilly Media.
8. Java Power Tools, John Smart,O'Reilly.
9.  Java Cookbook, Ian F. Darwin,O'Reilly.

and... 

1. PostGIS in Action, Regina O. Obe Leo S. Hsu, Manning.
2. GeoServer, Beginner's Guide, S. Iacovella B. Youngblood, Packt Publishing.
3. Full stack Mobile App with Ionic Framework, Hoc Pan.