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Simulating CDI’s Session and Request Scope in a J2SE app

We’re currently considering refactoring the Naked Objects framework to use JSR-330 (dependency injection) and EE-oriented big brother, JSR-299 (CDI). Using vanilla JSR-330 is a no-brainer, ...
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Enabling JMX in Hibernate, EhCache, Quartz, DBCP and Spring

Continuing our journey with JMX (see: JMX for human beings) we will learn how to enable JMX support (typically statistics and monitoring capabilities) in some popular frameworks. Most ...
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OSGi: An Introduction

OSGi, created for Java-based systems, provides a framework for modular systems. OSGi makes it possible to define the dependencies of each individual module with the others and enables ...
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DB unit testing with dbUnit, JSON, HSQLDB and JUnit Rules

In this week’s run of my TDD course, I thought it would be interesting to write a little fixture to make it easier to use dbUnit. My original thought was just to teach dbUnit about ...
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Debugging the JVM

In some (rare) cases you might find yourself in the situation that you managed to crash the JVM itself. I most recently managed this by setting the name of a ThreadGroup to null. In ...
java-interview-questions-answers

Introducing Deliberate Caching

A few weeks ago I attended a ThoughtWorks Technology Radar seminar. I worked at ThoughtWorks for years and think if anyone knows what is trending up and down in software development ...
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Java 7: Project Coin in code examples

This blog introduces – by code examples – some new Java 7 features summarized under the term Project Coin. The goal of Project Coin is to add a set of small language changes ...
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Why I Like The Verbosity of Java

Java is too verbose, they say. You can find comparisons of Hello World programs that take 2 lines in ruby and 10 lines in Java, and in order to read a file you need 20 lines in Java ...
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Play framework modules: Divide and conquer

It’s usually the case that you start developing an application and go on fulfilling requirements. When your application grows bigger you start to realize the convenience of separating ...
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Make your JAXB cleaner with the MOXy implementation

The principle advantage of using JAXB when marshalling and demarshalling XML is the programming model. Simply annotate a few POJOs and use the JAXB API’s and you can serialise ...
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