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OSGi Testsuite: Introducing Classname Filters

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OSGi Testsuite is a JUnit test-runner that collects dynamically test classes for execution. It has been published by my fellow Rüdiger about a year ago and proven useful in some projects already. However for gonsole we had to use an ugly patch because version 1.0 only supported .*Test postfix matching for test class names. I solved this problem with version ...

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Agile Through a Matrix Lens

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“Agile” is something most teams do wrong*, without realizing they’re doing it wrong.  A good 2×2 matrix acts as a lens, helping to convert information into insight.  Let’s apply this lens to agile as applied within a company, and see if it helps people decide to do things differently.       When You Say Agile, What Do You Mean? There ...

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Don’t Migrate to MariaDB just yet. MySQL is Back!

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Now that I have your attention, I’d like to invite you to a critical review of where we’re at in the MySQL vs. MariaDB debate. Around one month ago, I visited Oracle Open World 2014, and I’ve met with Morgan Tocker, the MySQL community manager at Oracle to learn about where MySQL is heading. Who “is” MySQL An interesting learning ...

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Develop android weather app with Material Design

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This post describes how to create a weather app using material design guidelines. Material Design is  a set of rules for visual design, UI interaction, motion and so on. These rules help developer when they design and create an Android app. This post wants to describe how we create a weather app using Weatherlib as weather layer and Material design ...

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Java performance tuning survey results (part I)

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We conducted a Java performance tuning survey during October 2014. The main goal of the survey was to gathering insight into Java performance world to improve the Plumbr product offering. However, we are happy to share the interesting results with you as well. The data that we collected provided material for a lengthy analysis, so we decided to divide the results ...

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Development Overhead

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What does a developer spend his time on? Writing code, debugging, thinking and communicating with colleagues (that includes meetings). Anything that is beyond these activities is unnecessary overhead (some meetings are also unnecessary, but that’s a different topic). And yet, depending on our language and tools, we have to do a lot more to support the process of writing code. ...

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Painless Access from Java to PL/SQL Procedures with jOOQ

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PL/SQL is one of those things. Most people try to stay clear of it. Few people really love it. I just happen to suffer from stockholm syndrome, since I’m working a lot with banks. Even if the PL/SQL syntax and the tooling sometimes remind me of the good old times…           … I still believe that ...

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First steps with REST, Spray and Scala

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On this site you can already find a couple of articles on how to do REST with a multiple of different frameworks. You can find an old one on Play, some on Scalatra and I even started an (as of yet unfinished) series on Express. So instead of finishing the series on Express, I’m going to look at Spray in ...

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A Guide to Android RecyclerView and CardView

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The new support library in Android L (Lollipop) introduced two new UI widgets: RecyclerView and CardView. The RecyclerView is a more advanced and more flexible version of the ListView. This new component is a big step because the ListView is one of the most used UI widgets. The CardView widget, on the other hand, is a new component that does ...

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