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Programming Like Kent Beck

Three of us, namely Stig, Krzysztof, and Jakub, have had the pleasure of spending a week with Kent Beck during Iterate Code Camp 2012, working together on a project and learning programming ...
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Twitter REST API from Scala and Java using signpost

If you’ve read some other articles on this blog you might know that I like creating visualizations of various datasets. I’ve just started a small project where I want to ...
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Java Hidden code

Sometime ago I came across the issue of invisible characters in Strings. These can really cause confusion because they are invisible. String a = "Hello\u200e"; String b = ...
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JCG Flashback – 2011 – W37

Hello guys, Time for another post in the JCG Flashback series. These posts will take you back in time and list the hot articles on Java Code Geeks from one year ago. So, let’s ...
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Spring 3.1 Caching and @CacheEvict

My last blog demonstrated the application of Spring 3.1’s @Cacheable annotation that’s used to mark methods whose return values will be stored in a cache. However, @Cacheable is ...
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Does It Get Boring To Be A Programmer?

Programmers are people who create computer programs. (I’ll skip the discussion whether it should be “programmer”, “developer”, “engineer”, “coder” or whatever. You ...
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Duck typing in Java ? Well, not exactly

According to Wikipedia duck typing is: style of dynamic typing in which an object’s methods and properties determine the valid semantics, rather than its ...
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Apache Wicket: Remember Me functionality

It is quite common in web applications to have “Remember Me” functionality that allows user to be automatically logged in each time when he visits our website. Such feature can ...
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Building OpenJDK on Windows

Doing some experiments, I found that it often useful to have JDK source code available in hand to make some changes, play with it, etc. So I decided to download and compile that beast. ...
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Java Annotations – Retention

Consider a Java annotation: public @interface AnAnnotaton {} A class with this annotation applied on it: @AnAnnotaton class AnAnnotatedClass{ } And a test which checks if ...
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