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JavaOne 2012: JavaOne Technical Keynote

Mark Reinhold started off the JavaOne 2012 Technical Keynote. He said this year’s edition would be a little different because it would use largely the same example to illustrate ...
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JavaOne 2012: Java Strategy Keynote and IBM Keynote

I had a rough start to JavaOne 2012 similar to that at JavaOne 2010. It took 70 minutes for the people handling the check-in to provide me with a JavaOne badge due to ‘computer ...
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Google Guava v07 examples

We have something called Weekly Technology Workshops at TouK, that is, every Friday at 16:00 somebody has a presentation for everyone willing to come. We present stuff we learn and ...
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Observer Design Pattern in Java

‘Don’t call us, we’ll call you’… that’s the Hollywood OO (Object Oriented) Principle and it’s exactly what the Observer pattern is about. In ...
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Java Code Quality Tools – Overview

Recently, I had a chance to present the subject at the local IT community meetup. Here is the basic presentation: Java Code Quality Tools    and more ...
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Spring Security using API Authentication

Background While there are many blog posts that detail how to use Spring Security, I often still find it challenging to configure when a problem domain lies outside of the standard ...
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Testing Custom Exceptions with JUnit’s ExpectedException and @Rule

Exception Testing Why test exception flows? Just like with all of your code, test coverage writes a contract between your code and the business functionality that the code is supposed ...
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Log4j Thread Deadlock – A Case Study

This case study describes the complete root cause analysis and resolution of an Apache Log4j thread race problem affecting a Weblogic Portal 10.0 production environment. It will also ...
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JUnit Pass Test Case on Failures

Why create a mechanism to expect a test failure? There comes a time when one would want and expect a JUnit @Test case fail. Though this is pretty rare, it happens. I had the need to ...
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Does Immutability really means Thread Safety?

I have often read articles telling “If an object is immutable, it is thread safe”. Actually, I have never found an article that convinces me that immutable means thread safety. ...
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