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Chain Of Responsibility Design Pattern Example

Avoid coupling the sender of a request to the receiver by giving more than one object a chance to handle the request. Chain the receiving objects and pass the request along the chain ...
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Use Cases for Iterative Development

Almost everything I’ve read about use cases focuses on describing what needs to be added to your product. Agile development says “get it working first, make it better second.” ...
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Transparent JFrame using JNA

In Make JFrame transparent I had shown a way to making frame’s transparent using AWTUtilities class. But using that class results in access restriction compile time error, resolution ...
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Spring 3.1 Caching and Config

I’ve recently being blogging about Spring 3.1 and its new caching annotations @Cacheable and @CacheEvict. As with all Spring features you need ...
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Do Web 2.0 Companies Really Have The Best Technical Talent?

There are a lot of cool companies with products on the web that millions of people are using. I’ll wondered whether I should label them “web 2.0?, “silicon valley”, “cool ...
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Getting started with Scala and Scalatra – Part III

This post is the third on a series of articles I’m writing on scalatra. In ‘part I’ we created the initial environment, and in ‘part II’ we created the ...
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Fixing common Java security code violations in Sonar

This article aims to show you how to quickly fix the most common java security code violations. It assumes that you are familiar with the concept of code rules and violations and how ...
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VisualVM: Monitoring Remote JVM Over SSH (JMX Or Not)

VisualVM is a great tool for monitoring JVM (5.0+) regarding memory usage, threads, GC, MBeans etc. Let’s see how to use it over SSH to monitor (or even profile, using its sampler) ...
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OutOfMemoryError: unable to create new native thread – Problem Demystified

As you may have seen from my previous tutorials and case studies , Java Heap Space OutOfMemoryError problems ...
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Multiple versions of Java on OS X Mountain Lion

Before Mountain Lion, Java was bundled inside OS X. It seems that during the upgrade, the Java 6 version I had on my machine was removed. Apparently the reason for uninstalling Java ...
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