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On Java 8’s introduction of Optional

I had recently discovered the JDK 8′s addition of the Optional type. The Optional type is a way to avoid NullPointerException, as API consumers that get Optional return values from ...
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Spring JpaRepository Example (In-Memory)

This post describes a simple Spring JpaRepository example using an in memory HSQL database. The code example is available from GitHub in the Spring-JpaRepository directory. It is based ...
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SuperMan bound by Java Monitors

Its a dark time in the life of Super Man. Jor-El wants him to go on a voyage to prepare him for his ultimate destiny. Yet the Earth is faced with dooms-day and the Justice League needs ...
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How Hadoop Works? HDFS case study

The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed ...
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There is no application server

We have recently posted data about application server market share we gathered from the free Plumbr deployments. And it resonated well – via different channels we got hundreds of ...
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JavaEE 7 with GlassFish on Eclipse Juno

Java EE 7 is hot. The first four JSRs passed the final approval ballot recently and GlassFish 4 reached promoted build 83 in the meantime. If you are following my blog you know, that ...
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Spring Java Configuration

I have found that a lot of Spring developers I know still do not know about or use Spring Java Configuration (aka JavaConfig). Spring 3.0 introduced this feature which allows Spring ...
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Release of Disruptor 3.0.0

I’ve decided that I’m a bit bored of the whole putting a beta tag on various versions of the Disruptor so I’ve decide to send forth Disruptor 3.0.0 into the world. ...
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Spring with Maven

1. Overview This tutorial will discuss how to setup Spring with Maven and will go over specific usecases of using Spring dependencies. The latest Spring releases can be found on Maven ...
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Running JUnit Tests Repeatedly Without Loops

Recently I came across a problem where I had to write tests for a method that calculates randomly distributed values within a certain range of possibilities 1. More precisely if you ...
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