Home » Author Archives: Ilias Tsagklis (page 7)

Author Archives: Ilias Tsagklis

Ilias Tsagklis
Ilias is a senior software engineer working in the telecom domain. He is an applications developer in a wide variety of applications/services, currently the technical lead in a in-house PCRF solution. Particularly interested in multi-tier architecture, middleware services and mobile development (contact). Ilias Tsagklis is co-founder and Executive Editor at Java Code Geeks.

5′ on IT-Architecture: three laws of good software architecture

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The issue with architectural decisions is that they effect the whole system and/or you often need to make them early in the development process. It means a lot effort if you change that decision a couple of months later. From an economic standpoint architectural decisions are often irrevocable. Good architecture is one that allows an architect to make late decisions ...

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Java 7: Closing NIO.2 file channels without loosing data

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Closing an asynchronous file channel can be very difficult. If you submitted I/O tasks to the asynchronous channel you want to be sure that the tasks are executed properly. This can actually be a tricky requirement on asynchronous channels for several reasons. The default channel group uses deamon threads as worker threads, which isn’t a good choice, cause these threads ...

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Threading stories: ThreadLocal in web applications

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This week I spend reasonable time to eliminate all our ThreadLocal variables in our web applications. The reason was that they created classloader leaks and we coudn’t undeploy our applications properly anymore. Classloader leaks happen when a GC root keeps referencing an application object after the application was undeployed. If an application object is still referenced after undeploy, then the ...

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Threading stories: about robust thread pools

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Another blog of my threading series. This time it’s about thread pools, robust thread pool settings in particular. In Java thread pools are implemented by the ThreadPoolExecutor class introduced in Java 5. The Javadoc of that class is very well organized. So I spare me the effort to give a general introduction here. Basically, what ThreadPoolExecutor does is, it creates ...

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Java 7 #8: NIO.2 File Channels on the test bench

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Another blog post about new JDK 7 features. This time I am writing about the new AnsynchronousFileChannel class. I am analyzing the new JDK 7 features in depth for a couple of weeks now and I have decided to number my posts consecutively. Just to make sure I don’t get confused :-) Here is my 7th post about Java 7 ...

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Threading stories: about robust thread pools

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Another blog of my threading series. This time it’s about thread pools, robust thread pool settings in particular. In Java thread pools are implemented by the ThreadPoolExecutor class introduced in Java 5. The Javadoc of that class is very well organized. So I spare me the effort to give a general introduction here. Basically, what ThreadPoolExecutor does is, it creates ...

Read More »

Best Of The Week – 2012 – W11

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Hello guys, Time for the “Best Of The Week” links for the week that just passed. Here are some links that drew Java Code Geeks attention: * Secure Code Development: A Casualty With Agile?: This article discusses the creation of secure code by Agile teams and references a study that shows that Agile teams do not take security seriously even when building ...

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Java: Improvements to the client and desktop parts of Java SE 6 and Java SE 7 !!!

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Client-Side Improvements in Java 6 and Java 7 Learn about the improvements to the client and desktop parts of Java SE 6 and Java SE 7, including the new applet plug-in, the Java Deployment Toolkit, shaped and translucent windows, heavyweight-lightweight mixing, and Java Web Start. Introduction Since the release of Java Platform, Standard Edition 6 (Java SE 6) in December ...

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JEE7: Looking ahead to a new era

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With the release of Java EE 7 scheduled for the second half of 2012, projected JSRs are all up and running. The Java EE 7 release, which will reflect the evolving needs of the industry as it moves into the cloud, is date driven: anything not ready will be deferred to Java EE 8. Here is an update and summary ...

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Best Of The Week – 2012 – W10

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Hello guys, Time for the “Best Of The Week” links for the week that just passed. Here are some links that drew Java Code Geeks attention: * How to Hire a Programmer: Some tips on how to hire a programmer like checking fir his portfolio, having a phone screen, assigning an audition project etc. Also check out our brand new Jobs section. ...

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