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Devoxx Day 1

Participating at Devoxx brought me enough motivation to post my first blog entry. I am for the first time here and I am really impressed by how it is organized. There are a record number ...
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Java SE 7, 8, 9 – Moving Java Forward

Today (NOTE: October 4, 2011) was keynote day. JavaOne Keynote was happening this early morning from 8:30 to 10:30 am and one more time my press pass got me into it quite early. So ...
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Recycling objects to improve performance

Overview In a previous article I stated that the reason the deserialization of objects was faster was due to using recycled objects. This is potentially surprising for two reasons, ...
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Mock Static Methods with PowerMock

In a recent blog, I tried to highlight the benefits of using dependency injection and expressing the idea that one of the main benefits of this technique is that it allows you to test ...
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Java Secret: Loading and unloading static fields

OVERVIEW To start with it is natural to assume that static fields have a special life cycle and live for the life of the application. You could assume that they live is a special place ...
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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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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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Monitoring OpenJDK from the CLI

Currently I do quite a bit of work in and around the Java virtual machine (JVM), most of the time on Linux. When things go awry and I am trying to establish why, I reach for the Java ...
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Programming antipatterns

 Did you ever do a code review where you recorded an extremely high amount of WTF/m? And did you ever wonder what the cause of all this bad code is? Most of the time cause number ...
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