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JavaOne 2012: The Road to Lambda

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One of the presentations I most eagerly anticipated for JavaOne 2012 was Brian Goetz‘s ‘The Road to Lambda.’ The taste of Lambda at last night’s Technical Keynote only added to the anticipation. Held in the Hilton Plaza A/B, this was a short walk from the previous presentation that I attended in Golden Gate A/B/C. I had expected the relatively large ...

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Enhancing Spring Test Framework with beforeClass and afterClass setup

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How to allow instance methods to run as JUnit BeforeClass behavior JUnit allows you to setup methods on the class level once before and after all tests methods invocation. However, by design on purpose that they restrict this to only static methods using @BeforeClass and @AfterClass annotations. For example this simple demo shows the typical Junit setup: package deng.junitdemo; import ...

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Spring 3.1: Caching and EhCache

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If you look around the web for examples of using Spring 3.1’s built in caching then you’ll usually bump into Spring’s SimpleCacheManager, which the Guys at Spring say is “Useful for testing or simple caching declarations”. I actually prefer to think of SimpleCacheManager as lightweight rather than simple; useful in those situations where you want a small in memory cache ...

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JavaOne 2012: How Do Non-Blocking Data Structures Work?

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I was a little surprised when I looked at my schedule for today and noted that all of the sessions I have currently planned to see today are in the Hilton. This became a little less surprising when I realized that about half of the JavaOne presentations are in the Hilton and that they seem to be roughly located by ...

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Stuff I Learned from Grails Consulting

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I don’t do much Grails consulting since I work for the Engineering group, and we have an excellent group of support engineers that usually work directly with clients. I do occasionally teach the 3-day Groovy and Grails course but I’ve only been on two onsite consulting gigs so far, and one was a two-week engagement that ended last week. As ...

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JavaOne 2012: JavaOne Technical Keynote

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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 various aspects of Java rather than standalone individual coverage of each component of Java. Richard Bair and Jasper Potts of the JavaFX team (and associated with FXExperience) introduced this example application, ...

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JavaOne 2012: Java Strategy Keynote and IBM Keynote

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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 and printer technical difficulties.’ Although I’m not the most patient person in the world, the part of this that was even more disappointing than the wait ...

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Google Guava v07 examples

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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 work on at home, but we also have a bulletin board with topics that people would like to listen about. Last week Maciej Próchniak had a talk about Clojure, this ...

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Business Agility Through DevOps and Continuous Delivery

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The principles of Continuous Delivery and DevOps have been around for a few years. Developers and system administrators who follow the lean-startup movement are more than familiar with both. However, more often than not, implementing either or both within a traditional, large IT environment is a significant challenge compared to a new age, Web 2.0 type organization (think Flickr) or ...

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Observer Design Pattern in Java

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‘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 this post we’ll review this pattern and how it is used in Java, you may already have used it without knowing… According to Head First Design Patterns book, this is the definition of the Observer pattern: Defines ...

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