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Monthly Archives: March 2012

JVM: How to analyze Thread Dump

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This article will teach you how to analyze a JVM Thread Dump and pinpoint the root cause of your problem(s). From my perspective, Thread Dump analysis is the most important skillset to master for any individual involved in Java EE production support. The amount of information that you can derive from Thread Dump snapshots is often much beyond than what ...

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6 things they didn’t teach me at the academy

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Looking for your first position in the software world? Want to know more about developer’s life? Improve your chances of getting hired and blend in better? Most cases you just finished your undergrad studies. The years you spent in the academy are valuable and helpful in many ways, but don’t necessarily prepare you for a developer’s life. Now, this post is ...

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Twitter4j and Esper: Tracking user sentiments on Twitter

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For new comers to Complex Event Processing  and Twitter API, I hope this serves as a short tutorial and helps them get off the ground quickly. Managing big data and mining useful information from it is the hottest discussion topic in technology right now. Explosion of growth in semi-structured data flowing from social networks like Twitter, Facebook and Linkedin is ...

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Spring & JSF integration: MVC Nuts and Bolts

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I have attempted to integrate JSF with Spring MVC in the past, and whilst my first attempt worked, it was far from ideal. This time around I decided to take a few key decisions to help focus my efforts: Drop backwards compatibility. There is just too much work involved with supporting JSF 1.2 and too much good stuff coming up ...

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Unit Testing is a Means to an End

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Most professional software developers these days understand the importance and value of writing and using unit tests. A nice summary of some of the oft-touted and oft-realized benefits of unit testing can be found in the StackOverflow.com thread Is Unit Testing worth the effort? [my only very minor criticism is the mixing of more specialized Test-Driven Development (TDD) with the ...

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Apache Mahout: Build a spam filter server

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Something quite interesting has happened with Lucene. It started as a library, then its developers began adding new projects based on it. They developed another open source project that would add crawling features (among others features) to Lucene. Nutch is in fact a full featured web serach engine that anyone can use or modify. Inspired in some famous papers from ...

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Twitter API on your Java Application

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Ever wonder of attaching your tweets to your Java Applications? I searching for the best API out there for this and lucky for me, I found it! http://twitter4j.org/ A Simple How To: The first thing we need to do is to create an application within your twitter account, grant it access and generate authentication tokens (although, the consumer tokens will ...

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Building Scalable Enterprise Systems

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Successful enterprise are all about business agility and able to introduce new products and services in the market. All this business agility coupled with reduced IT overheads means, the enterprise need to find better ways to improve and transform their enterprise systems. The advent of Cloud, Social, Mobile and Consumerization of IT means enterprises applications need to be adapt to ...

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JMS Development Fundamentals using Apache ActiveMQ

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It was last year when I had my hands on trying out JMS. The Idea and concept behind baffled me a little but as soon as I knew what It is for, I quickly grasp it. In this post, I will show the fundamentals of developing a simple producer/consumer in Java using Apache ActiveMQ as its backend. Let’s first start ...

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Integrating Spring Into Legacy Applications

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One of the things that all Spring developers like to do is to shoehorn Spring into any application they work on – it’s one of my guilty pleasures in life: you see some code, think it’s rubbish because it contains several well known anti-patterns and then think how cool it would be if this app was a Spring app. When ...

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