List/Grid Yearly Archives: 2012

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java.lang.ClassNotFoundException: How to resolve

This article is intended for Java beginners currently facing java.lang.ClassNotFoundException challenges. It will provide you with an overview of this common Java exception, a sample ...
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Invaluable books for an enterprise software engineer

I am again in the design phase of a very large project. The project context is to provide a new solution for the core services and core integration infrastructure around the prepaid ...
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Health Checks, Run-time Asserts and Monkey Armies

After going live, we started building health checks into the system – run-time checks on operational dependencies and status to ensure that the system is setup and running correctly. ...
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become/unbecome – discovering Akka

Sometimes our actor needs to react differently based on its internal state. Typically receiving some specific message causes the state transition which, in turns, changes the way subsequent ...
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JUnit4 Parameterized and Theories Examples

I always relied on TestNG to pass parameters to test methods in order to give a bit of flexibility to my tests or suites. However, the same flexibility can be achieved using JUnit4. To ...
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Gang of Four – Proxy Design Pattern

Proxy is another Structural design pattern which works ‘on behalf of’ or ‘in place of’ another object in order to access the later. When to use this pattern? Proxy pattern is ...
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Java Regular Expression Tutorial with Examples

When I started my career in java, regular expressions were a nightmare for me. This tutorial is aimed to help you mastering java regular expression and for me to come back at regular ...
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Spring MVC REST Calls With Ajax

This post provides a simple example of REST calls to a Spring MVC web application. It is based on the Serving Static Resources With Spring MVC and Fetching JSON With Ajax In Spring ...
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JBoss HornetQ for Kids, Parents and Grandparents – Chapter 1

It’s now almost 4 years that I’m working with HornetQ and I think it’s time to share part of what I learnt so far. The main purpose of this post is not to rewrite the official ...
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Spring 3.1 – Loading Properties For XML Configuration From Database

Spring makes it easy to inject values obtained from properties files via its PropertyPlaceholderConfigurer and (pre-Spring 3.1) PropertySourcesPlaceholderConfigurer (Spring 3.1). These ...
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