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Quicksorting – 3-way and Dual Pivot

It’s no news that Quicksort is considered one of the most important algorithms of the century and that it is the defacto system sort for many languages, including the Arrays.sort ...
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Java 8 lambda walkthrough

For work I have made a presentation about Java 8 project lambda and of course also some simple code illustrating some of the points. The overall reasons for Java 8 are:More concise ...
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Transactional Lucene

Many users don’t appreciate the transactional semantics of Lucene’s APIs and how this can be useful in search applications. For starters, Lucene implements ACID properties:Atomicity: ...
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JPA 2 | Dynamic Queries Vs Named Queries

JPA has its own Query language called JPQL. JPQL is very similar to SQL, with one major difference being that JPQL works with entities as defined in the application whereas SQL works ...
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Mockito – Extra Interfaces with annotations and static methods

In the code I have quite recently came across a really bad piece of code that based on class casting in terms of performing some actions on objects. Of course the code needed to be ...
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How Many Threads Does It Take to Fill a Pool?

In recent months we have been seeing a small but persistent percentage of our operations fail with a strange exception – org.springframework.jdbc.CannotGetJdbcConnectionException  ...
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Java Security Tutorial – Step by Step guide to create SSL connection and certificates

In our series of articles on applying JEE security we present you another detailed tutorial on how to create a SSL connection and create certificates in a Java EE application. As mentioned ...
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GC Memory Visualizer Tutorial – Part1

As you may have read from past articles, one of the key Java programmer skills to acquire is your ability to understand and assess the health of the JVM such as the Java heap memory ...
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MOXy is the New Default JSON-Binding Provider in GlassFish 4

GlassFish 4 is now available offering the complete Java EE 7 (JSR-342) platform.  EclipseLink made some major contributions to this release.  The first is providing the JPA 2.1 (JSR-338) ...
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Java testing with Selenium and dynamic ids in html

One of the cool aspects of Selenium, is that not only can you record yourself using a site, you can actually run this as a junit test. Firstly, I’ll install Selenium in Firefox ...
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