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Unit Testing exercise with FizzBuzz and JUnitParams

I sometimes use FizzBuzz to demonstrate the basics of unit testing to newbies. Although FizzBuzz is really simple problem, it can also be used to demonstrate more advanced unit testing ...
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Don’t Miss out on Awesome SQL Power with FIRST_VALUE(), LAST_VALUE(), LEAD(), and LAG()

If you’re using a commercial database or PostgreSQL / Firebird / CUBRID, you will be able to take advantage of the full power of window functions. We’ve blogged about window functions’ ...
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Multithreading and Concurrency Interview Questions and Answers – The ULTIMATE List (PDF Download)

EDITORIAL NOTE: Concurrency is always a challenge for developers and writing concurrent programs can be extremely hard. There is a number of things that could potentially blow up and ...
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What is your “x”? The technical details about the Devoxx Keynote Demo

If everything went fine, I just got off the stage and ended the demo part of Mike’s (@mpiech) demo.We talked a lot about xPaaS. The different pieces of the puzzle that we integrated ...
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OSGi Testsuite: Introducing Classname Filters

OSGi Testsuite is a JUnit test-runner that collects dynamically test classes for execution. It has been published by my fellow Rüdiger about a year ago and proven useful in some projects ...
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Agile Through a Matrix Lens

“Agile” is something most teams do wrong*, without realizing they’re doing it wrong.  A good 2×2 matrix acts as a lens, helping to convert information into insight.  Let’s ...
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Don’t Migrate to MariaDB just yet. MySQL is Back!

Now that I have your attention, I’d like to invite you to a critical review of where we’re at in the MySQL vs. MariaDB debate. Around one month ago, I visited Oracle Open World ...
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Develop android weather app with Material Design

This post describes how to create a weather app using material design guidelines. Material Design is  a set of rules for visual design, UI interaction, motion and so on. These rules ...
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Java performance tuning survey results (part I)

We conducted a Java performance tuning survey during October 2014. The main goal of the survey was to gathering insight into Java performance world to improve the Plumbr product offering. ...
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Development Overhead

What does a developer spend his time on? Writing code, debugging, thinking and communicating with colleagues (that includes meetings). Anything that is beyond these activities is unnecessary ...
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