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Quo Vadis JUnit

For me JUnit is the most important library of the Java universe. But I think a new version of it is overdue. With it’s approach of having a method definition as a test definition ...
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When a String is Null but Not Null

Introduction A junior programmer on my team at work had an interesting bug.  Its symptoms I have seen more than once.  This post is what to look for and how to prevent it in the future.  ...
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Resource scheduling and task launching with Apache Mesos and Apache Aurora at Twitter

Episode # 23 of the podcast was a talk with Bill Farner Bill explained how Twitter, using Apache Mesos and Apache Aurora, gets more for their money for the hardware and saves engineering ...
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Linux productivity tools for me

This is the stack/are the tools that keep me productive in my day to day programming experience on linux. Well, first of all let me tell you, that this might not fit your needs , as ...
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How to Use Callable and FutureTask

Introduction Since Java 1.5 there has been a new set of objects under java.util.concurrent.  This package has a number of different classes including thread queues.  I could have ...
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Legacy Code to Testable Code #5: Extract Class

This post is part of the “Legacy Code to Testable Code” series. In the series we’ll talk about making refactoring steps before writing tests for legacy code, and how they make ...
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Java Code Geeks and ZK are giving away FREE ZK Charts Licenses (worth over $2700)!

Struggling with the creation of fancy charts for your Java based UI? Then we have something especially for you! We are partnering with ZK, creator of cool Java tools, and we are running ...
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3 Simple Guidelines to Rule Development, Design and Traceability

(Article guest authored together with John Hurlocker, Senior Middleware Consultant at Red Hat in North America) In this tips and tricks article we present some background and guidelines ...
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Hibernate application-level repeatable reads

Introduction In my previous post I described how application-level transactions offer a suitable concurrency control mechanism for long conversations. All entities are loaded within ...
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Explore Git Internals with the JGit API

Have you ever wondered how a commit and its content is stored in Git? Well, I have, and I had some spare time over the last rainy weekend, so I did a little research. Because I feel ...
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