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Learn by Errors : Java + OSGi

Recently I worked on getting Apache Hive work inside an OSGi environment. While not proving to be a proverbial piece of cake (software right?.. Why am I not surprised? ), it led ...
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Generic Text Comparison Tool with LCS Approach

Detecting and showing differences of two texts (especially having hundreds or thousands of lines) is a common problem. Using pure java.lang.String class methods may be a solution, but ...
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Log JDBC operations with Log4jdbc

When we develop any application, after we finish it or when we end up any of its module, we start optimization process. Most applications contain database access, and if you are using ...
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Solving a Producer-Consumer Problem in Java

The producer-consumer problem is one of the most frequently encountered problems when we attempt multi threaded programming. While not as challenging as some of the other problems ...
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Java GUI Application Shutdown Gotcha

In recent times I’ve had issues with one or two Java GUI application not shutting down when I close them. They seem to stay around as a process, consuming computer resources. ...
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Easy Unit and Integration Code Coverage

This example shows how to generate coverage for unit and integration tests using Maven and Sonar. It uses very simple techniques and should only take 10-15 minutes to get running in ...
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Java pitfalls: Field access in inner classes

This is not a “pitfall” per se, but an implementation detail worth knowing. Let’s say I have a inner class with a field. Such a field is visible to the enclosing class, but which ...
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Java static methods can be a code smell

Definition of code smell (from Wikipedia):“any symptom in the source code of a program that possibly indicates a deeper problem.” In Java, static methods allow ...
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Google App Engine JAX-RS REST service

In this article you will learn how to create a REST service using JAX-RS reference implementation (Jersey) and deploy it on Google AppEngine.Prerequisites For this tutorial ...
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ADF BC: Create a UI table binded to Business Components

In this example we are going to show how to create a simple UI table (af:table) which is binded to Business Components. Once again, I tried to search on the net with the simple criteria: ...
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