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1. JPA Mini Book

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3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

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Spring Java Configuration

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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 to be configured entirely in Java – no more XML!! I really enjoy using JavaConfig because, well… it’s Java! This means it has all the benefits of Java type-safety ...

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Release of Disruptor 3.0.0

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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. The big challenges of this release were to clean up the code and come up with a better algorithm for handling multiple producers. If I was lucky, make it ...

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Becoming Acquainted with Scala

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There are many touted benefits of the Scala programming language, especially for Java developers. Among others, Scala’s advertised strengths and advantages include the following: Runs on the Java Virtual Machine (JVM) Able to run on numerous hardware and operating systems platforms Access to rich set of libraries and functionality in the JDK Access to the broad Java ecosystem and its ...

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Spring with Maven

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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 Central. 2. Basic Maven Spring Dependencies Spring was designed to be modular and flexible – the basic Spring container can be used in a variety of scenarios, without including ...

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Running JUnit Tests Repeatedly Without Loops

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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 assume a signature that looks like                 interface RandomRangeValueCalculator { long calculateRangeValue( long center, long radius ); } a test might verify ...

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Choosing a Programming Language

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What programming language to use is probably the single biggest technical decision facing a project. That one decision, affects every one that follows – from the frameworks and libraries you can use, to the people you hire. So how do you go about choosing what programming language to use? The truth is, you probably do what most people do and ...

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How to increase donations to an open source project

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Lots of open source projects raise money from their user communities by soliciting donations.  Most open source projects will have the ‘Support’  or ‘Make a Donation’ button on their home page or download page. At Eclipse we have had the Friend of Eclipse program for a number of years to solicit financial support for our community. Earlier this year, we ...

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Simple Gradle Web Application

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Gradle easily supports Java web applications through the “war” and “jetty” plugins. This tutorial will show you how to quickly make a simple Java Servlet web application.                     Our basic project structure will be: basic-web src main java com codetutr HelloWorldServlet.java webapp WEB-INF web.xml First, create a folder called basic-web, and ...

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Does Defensive Programming Deserve Such a Bad Name?

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The other day I went to an hour’s talk on erlang, merely as an observer; I know nothing about erlang except that it does sound interesting and that the syntax is… well… unusual. The talk was given to some Java programmers who had recently learnt erlang and was a fair critic about their first erlang project, which they were just ...

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