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Hamcrest Containing Matchers

The Hamcrest 1.3 Javadoc documentation for the Matchers class adds more documentation for several of that class’s methods than were available in Hamcrest 1.2. For example, the ...
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Java Thread Pool Example using Executors and ThreadPoolExecutor

A thread pool manages the pool of worker threads, it contains a queue that keeps tasks waiting to get executed. A thread pool manages the collection of Runnable threads and worker threads ...
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ETags for REST with Spring

1. Overview This article will focus on ETags – the Spring support, integration testing of the RESTful API, and consumption scenarios with curl. This is the ninth of a series of articles ...
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IntelliJ IDEA: Generate equals, hashCode and toString with Google Guava

THE PROBLEM In the world of Java, we’re quite often in the need of writing equals, hashCode and toString methods. To be honest, this is usually only an boilerplate obligation. Thanks ...
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Processing huge files with Java

I recently had to process a set of files containg historical tick-by-tick fx market data and quickly realized that none of them could be read into memory using a traditional InputStream ...
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MapReduce Algorithms – Secondary Sorting

We continue with our series on implementing MapReduce algorithms found in Data-Intensive Text Processing with MapReduce book. Other posts in this series:Working Through Data-Intensive ...
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Hibernate Search 4.2 final released: spatial query supported

JBoss has announced the release of Hibernate Search 4.2 final. You may download it from Sourceforge or use the Maven artifacts. In the new release, some interesting features are included:Hibernate ...
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Garbage Collection Analysis of PCGen

Introduction I decided to combine two software loves of mine and perform some analysis on PCGen, a popular Java based open source character generator for role-playing games. I used ...
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How many threads do I need?

It depends on your application. But for those who wish to have some insight about how to squeeze out most from all those expensive cores you have purchased for your production site ...
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QOTD: Java Thread vs. Java Heap Space

The following question is quite common and is related to OutOfMemoryError: unable to create new native thread problems during the JVM thread creation process and the JVM thread capacity. ...
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