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 ....



Exceptions in Lambdas: An Elegant Solution to a Bit of a Mess


Consider the following function for writing to a file: The idea behind the method is to allow the user to pass in different implementations of InputStream to the method so that writeToFile can be called for example with a GZIPOuputStream, SnappyOuputStream (fast compression) or simply a plain FileInputStream. private static void writeToFile(File file, String value, Function<OutputStream, OutputStream> writing) throws IOException{ ...

Read More »

Generics Names


Generics type parameter names usually contain one, single capital case character. If you start to read the official ORACLE documentation on generics the first example is /** * Generic version of the Box class. * @param <T> the type of the value being boxed */ public class Box<T> { // T stands for "Type" private T t; public void set(T ...

Read More »

Jersey WebResource – Header don’t get appended


Yesterday I ran into a strange problem when using the Jersey WebResource class for doing HTTP calls: it seemed as if the headers I set, simply got ignored when executing the HTTP call. Read ahead. What I tried to achieve was to call a REST Api to get some data from on of our applications. For doing so, I used ...

Read More »

Deploying Java EE Application to Docker Swarm Cluster


What is Docker Swarm? Docker Swarm provides native clustering to Docker. Clustering using Docker Swarm 0.2.0 provide a basic introduction to Docker Swarm, and how to create a simple three node cluster. As a refresher, the key components of Docker Swarm are shown below:       In short, Swarm Manager is a pre-defined Docker Host, and is a single point for all administration. Additional Docker hosts are ...

Read More »

Functional Programming in Java 8 with Javaslang


We’re very happy to announce a guest post on the jOOQ Blog written by Daniel Dietrich, Senior Software Engineer at HSH Nordbank, husband and father of three. He currently creates a pricing framework for financial products as project lead and lead developer. Besides his work, he is interested in programming languages, efficient algorithms and data structures. Daniel wrote the short ...

Read More »

Does TDD really lead to good design?


Recently I tweeted that TDD can’t lead to a good design if we don’t know what good design looks like. I was also saying that we probably should teach design before TDD (or at least, at the same time). This tweet led to a discussions with J.B. Rainsberger, Ron Jeffries, and a few others. J.B. and I ended up having ...

Read More »

Streaming data into HPCC using Java


High Performance Computing Cluster (HPCC) is a distributed processing framework akin to Hadoop, except that it runs programs written in its own Domain Specific Language (DSL) called Enterprise Control Language (ECL).   ECL is great, but occasionally you will want to call out to perform heavy lifting in other languages.  For example, you may want to leverage an NLP library ...

Read More »

The Bet With Typesafe That Got Me Into Building Akka


Back to the drawing board: The lost lines of code on the road to Akka Streams, Akka HTTP and Akka Typed If you’ve ever been curious about how new core features are being developed and why your favorite technologies take on a certain path, you’ve reached the right place. In the new design decisions series on the Takipi blog you’ll ...

Read More »
Want to take your Java Skills to the next level?
Grab our programming books for FREE!
  • Save time by leveraging our field-tested solutions to common problems.
  • The books cover a wide range of topics, from JPA and JUnit, to JMeter and Android.
  • Each book comes as a standalone guide (with source code provided), so that you use it as reference.
Last Step ...

Where should we send the free eBooks?

Good Work!
To download the books, please verify your email address by following the instructions found on the email we just sent you.