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OpenShift Express: Deploy a Java EE application (with AS7 support)

During the past few years, I’ve been hearing about “cloud” services more and more. Initially I wasn’t really curious to try them out. But a few months (a year?) ...
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Profile your applications with Java VisualVM

When you need to discover what part of an application consume the more CPU or Memory, you must use a profiler to do that. One profiler, packed by default with the Sun JDK is Java VisualVM. ...
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Java 8 Status Updates

The two big new language features of the upcoming Java SE 8 release are Lambda Expressions and Modularity. For both, status updates have been released these days. I’ll share the links ...
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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 ...
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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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