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Testing an Object’s Internal State with PowerMock

Most unit testing focuses on testing an object’s behaviour in order to prove that it works. This is achieved by writing a JUnit test that calls an object’s public methods and then ...
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Top 10 Java Books you don’t want to miss

We learn by reading books and experimenting on it. So, it is imperative that you choose the best available options. In this post I would like to share my experience with some of the ...
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Parametrizing custom validator in JSF 2

Writing a custom validator in JSF 2 is not a complicated task. You implement Validator interface, add @FacesValidator annotation and insert validator declaration in faces-config.xml, ...
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Vaadin add-ons and Maven

Introduction One (of the many) thing I like about Vaadin, is its community of ‘add-ons’ to the Vaadin framework – what they call the Vaadin Directory. An ‘add-on’ is a community-contributed ...
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You can’t be Agile in Maintenance? (Part 2)

This article continues from You can’t be Agile in Maintenance? (Part 1) Coding Guidelines – follow the rules Getting the team to follow coding guidelines is important in ...
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You can’t be Agile in Maintenance? (Part 1)

I’ve been going over a couple of posts by Steve Kilner that question whether Agile methods can be used effectively in software maintenance. It’s a surprising question really. ...
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Concurrency optimization – Reduce lock granularity

Performance is very important in high load multi-threaded applications. Developers must be aware of concurrency issues in order to achieve better performance. When we need concurrency ...
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Apache Shiro : Application Security Made Easy

Considering that JAVA is over 10+ years old, the number of choices for application developers that need to build authentication and authorization into their applications is shockingly ...
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GPGPU with Jcuda the Good, the Bad and … the Ugly

In our previous article GPGPU for Java Programming we showed how to setup an environment to execute CUDA from within java code. However the previous article focused only on setting ...
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Java EE6 Events: A lightweight alternative to JMS

The feature I’m going to talk about today is the event mechanism that is in java EE 6. The general idea is to fire an event and let an event listener pick it up. I have created this ...
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