About Jakub Kubrynski

I'm software developer by vocation. Java team leader at work and open source enthusiast at home. Strongly interested in new technologies. Fan of java.util.concurrent and sun.misc.Unsafe. My motto is "minimum code, maximum functionality.

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Debugging OpenJDK

Sometimes debugging Java code is not enough and we need to step over the native part of Java. I spent some time to achieve proper state of my JDK to do that, so short description probably ...
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Understanding Spring Web Initialization

Few years ago majority of us were used to write XML config files everywhere, to setup even simple Java EE application. Today using Java or Groovy to configure projects is becoming preferred ...
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Injecting Spring beans into non-managed objects

Advantages coming from dependency injection can be addicting. It’s a lot easier to configure application structure using injections than doing all resolutions manually. It’s ...
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Using HA Singleton in JBoss 7

Some time ago I had to change standard clustering behavior of Quartz Scheduler, and let it work without synchronizing over database. There are of course a lot of options to do that, ...
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Speed Up with Fast Java and File Serialization

Since the first version of Java, day-by-day many developers have been trying to achieve at least as good of performance as in C/C++. JVM vendors are doing their best by implementing ...
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Java 7 vs Groovy 2.1 Performance Comparison

I haven’t used Groovy for 2 years, since my last touch with Grails. I get stuck in (hard)core Enterprise Java, with some performance aspects in background. I’ve almost missed ...
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