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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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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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Test Driven Traps, part 2

The Story of a Unit in Unit Tests In the previous part of this article, you could see some bad, though popular, test samples. But I’m not a professional critic (also ...
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Checked and unchecked exceptions in Java

Java has two types of exceptions – checked and unchecked. In short – checked are meant for cases when the developer can reasonably recover from the exception, while unchecked exceptions ...
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Guava Files: Java File Management

Both Groovy and Java SE 7 provide improvements for file management in Java as I discussed in posts here, here, here, and here. However, when a particular Java application is not able ...
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Is Java Dead or Invincible?

Writer Isaac Asimov once said that ‘the only constant is change’. That isn’t just a phrase in the software industry, it is an absolute fact. Once, there was a day ...
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Chain Of Responsibility Design Pattern Example

Avoid coupling the sender of a request to the receiver by giving more than one object a chance to handle the request. Chain the receiving objects and pass the request along the chain ...
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