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Apache OpenOffice just graduated from the Incubator

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Apache OpenOffice has just made it out of the Incubator and is now an official Apache Software Foundation project. “What?”, might some people ask now, “wasn’t it official before a year or so?”. No, it wasn’t! When Oracle decided to donate OpenOffice.org to the Apache Software Foundation, it entered the so called Incubatorfirst. That was back in June 2011. And ...

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Spring MVC for Atom Feeds

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How to add feeds (Atom) to your web application with just two classes? How about Spring MVC? Here are my assumptions: you are using Spring framework you have some entity, say “News”, that you want to publish in your feeds your ‘News’ entity has creationDate, title, and shortDescription you have some repository/dao, say ‘NewsRepository’, that will return the news from ...

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Generate QR Code image from Java Program

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If you are tech and gadget savvy, then you must be aware of QR codes. You will find it everywhere these days – in blogs, websites and even in some public places. This is very popular in mobile apps, where you scan the QR code using a QR Code scanner app and it will show you the text or redirect ...

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Clean code with aspects

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In my previous post I’ve described the alphabet conversion, and I’ve mentioned that we used AspectJ to resolve that task, but i did not mention how AspectJ works and what are aspects generaly. So in the next few lines i will explain: what is Aspect Oriented Programming and why we need it what is AspectJ using AspectJ with Spring (configuring ...

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Factory Design Pattern Case Study

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I had a job to check our project code quality. And have to report it back to my team leader for any obstacle that i found in the project. I found a lot of leaks and i think would be good to be discussed on the blog. Not to mock the author, but to learn and improve ourselves together. Like ...

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Setting up and playing with Apache Solr on Tomcat

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A while back a had a little time to play with Solr, and was instantly blown away by the performance we could achieve on some of our bigger datasets. Here is some of my initial setup and configuration learnings to maybe help someone get it up and running a little faster. Starting with setting both up on windows. Download and ...

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Turbo-charge your Android emulator for faster development

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I came across an article, which claims to boost the Android emulator’s performance using Intel’s Hardware Accelerated Execution Manager (HAXM) driver. It got me excited and I decided to verify this claim. This blog entry is my story. My tools: Android SDK r20.0.3 Intellij Community Edition 11.1.3 Basically, the special ‘enhancement’ provided by Intel is a special x86 Atom system ...

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Java 7: Meet the Fork/Join Framework

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JSR-166(y) is the official name of this new feature which is included in Java 7. If you notice there is a ‘y’ in the name, this is because JSR-166 (Concurrency Utilities) is being added since Java 5, but it wont stop here as there are already plans to add new classes in Java 8 under the JSR-166(e). Check this page ...

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Distributed Apache Flume Setup With an HDFS Sink

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I have recently spent a few days getting up to speed with Flume, Cloudera‘s distributed log offering. If you haven’t seen this and deal with lots of logs, you are definitely missing out on a fantastic project. I’m not going to spend time talking about it because you can read more about it in the users guide or in the ...

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