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Code4ReferenceList Recently Used(LRU) implementation using LinkedHashMap

Recently I stumbled on one of the Java interview questions: “Implement List-Recently-Used (LRU) Cache using Java collection class?” If you have worked on a similar problem before, ...
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Reactive Queue with Akka Reactive Streams

Reactive streams is a recently announced initiative to create a standard for asynchronous stream processing with built-in back-pressure, on the JVM. The working group is formed by companies ...
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No SRP? No TDD!

I’ve been thinking about what makes TDD fail, and there are obviously few reasons that were discussed to death (Get it? Dead? TDD? Ok, let’s move on). There’s a pattern I see ...
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How to create android dialogs in a reusable manner

 Creating dialogs is a very common need in your app to show a dialog box to the user in order to fetch a value, be in a mobile, desktop or even a web application. Furthermore, the ...
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Writing Clean Tests – Divide and Conquer

A good unit test should fail for only one reason. This means that a proper unit test tests only one logical concept. If we want to write clean tests, we have to identify those logical ...
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Android chart tutorial: AChartEngine

In this post, I will describe how to use AchartEngine. This is a great library for Android that help you to create charts. It supports several chart types, just to name a few:line ...
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ActiveMQ – Network of Brokers Explained – Part 5

In the previous part 4 we have seen how to load balance remote consumers on a queue using network connectors. In this part 5, we will see how the same configuration would work if we ...
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Java EE7 and Maven project for newbies – part 5 – Unit testing using Arquillian / Wildfly 8

Resuming from the previous parts Part #1, Part #2, Part #3, Part #4, This is the first ‘extra’ post, based on the  maven JavaEE7 demo project I am ‘building’ ...
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SynchronousQueue Example in Java – Producer Consumer Solution

SynchronousQueue is special kind of BlockingQueue in which each insert operation must wait for a corresponding remove operation by another thread, and vice versa. When you call put() ...
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10 things you can do to make your app secure: #2 Encoding Data

This is part #2 of a series on the OWASP Top 10 Proactive Controls, the 10 things you can do as a developer to make your application secure. In the previous post, I explained why Parameterized ...
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