Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!


1. JPA Mini Book

2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

5. Java Interview Questions


and many more ....



Does PostgreSQL Have an ORA-01795-like Limit?


The Oracle database requires that no more than 1000 entries be used in a SQL IN portion of a WHERE clause and will throw an ORA-01795 error if that number is exceeded. If a value needs to be compared to more than 1000 values, approaches other than use of IN must be applied. I wondered if this limitation applies to ...

Read More »

Critical Mass of Tests for Continuous Deployment


Does this situation sound familiar? An engineering team relies on manual testing for quality assurance and preventing regressions. The manual process is lengthy, prone to errors, and doesn’t handle edge cases, so there are frequent regressions that slip into production. The deployment pipeline has slowed to a crawl, causing features to pile up on top of each other. Getting anything ...

Read More »

#GeekListener v.2


Hello everyone, java and scala developers, big data engineers, geeks and random readers who opened the #GeekListener digest. So what was interesting on the previous week? There are a banch of things: echoes of the JavaOne conference, java lambdas, education, scala stuff and a humour which you may expect from me. So let’s begin! Stuart Marks starts the #GeekListener digest ...

Read More »

JavaOne and OOW 2015 Summary


Hello everyone! Finally I’m back after a great JavaOne and OOW 2015. In this post I’d like to share my experiences, some photos and a summary of the talks I attended. Pre Conference I flew to San Francisco on Saturday 24th 2015 via Copa Airlines CLO-PTY-SFO. Long trip from Colombia (about 8 hours). I missed the Geek Bike Ride, a ...

Read More »

Is your code too concrete?


A post of note Mark Tiele Westra wrote a splendid post two years ago, “The ball of mud transition,” in which he elaborated on an idea nabbed from a Stuart Kauffman book. He writes, “Take 20 buttons and a ball of string, and scatter the buttons over the floor. Then take two buttons at random, and connect them using a ...

Read More »

HOW-TO: Java 8 Date & Time with Thymeleaf and Spring Boot


If you happen to work with Spring Boot and Thymeleaf and you need to format Java 8 Date & Time objects in your views you may utilize thymeleaf-extras-java8time – Thymeleaf module for Java 8 Date & Time API. Adding thymeleaf-extras-java8time to an existing Maven or Gradle based Spring Boot project is as easy as adding a dependency and registering new ...

Read More »

More Java EE from Red Hat Engineers at Devoxx


It is Devoxx Belgium time! Finally. Everything kicks off today with the University Sessions and the conference itself starts tomorrow morning. We’re all pretty excited, as this is the major event in Europe. And Red Hat is proud to be a sponsor again this year. We will be onsite with 14 sessions, a booth – with beer, books and more. ...

Read More »

Deployment Automation Of Docker Java Application On VSphere And Photon


Background Java developers and DevOps professionals have long struggled to automate the deployment of enterprise Java applications. The complex nature of these applications usually meant that application dependencies and external integrations had to be re-configured each time an application was deployed in DEV/TEST environments. Many solutions advertised the “model once, deploy anywhere” message for application deployments. In reality, however there ...

Read More »

Want to take your Java skills to the next level?

Grab our programming books for FREE!

Here are some of the eBooks you will get:

  • Spring Interview QnA
  • Multithreading & Concurrency QnA
  • JPA Minibook
  • JVM Troubleshooting Guide
  • Advanced Java
  • Java Interview QnA
  • Java Design Patterns