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Java Intrinsics and Performance

The original question was How to count the number of 1’s a number will have in binary? I included a performance comparison of using Integer.bitCount() which can be turned into ...
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Non-blocking I/O – discovering Akka

Here comes the time to follow some good practices when implementing actors. One of the most important rules we should follow is avoiding any blocking input/output operations, polling, ...
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Two actors – discovering Akka

Hope you are having fun so far, but our application has serious performance defect. After measuring response times of the RandomOrgRandom class we developed in the previous part we ...
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Guava’s Strings Class

In the post Checking for Null or Empty or White Space Only String in Java, I demonstrated common approaches in the Java ecosystem (standard Java, Guava, Apache Commons Lang, and Groovy) ...
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MyBatis Tutorial – CRUD Operations and Mapping Relationships – Part 1

CRUD Operations MyBatis is an SQL Mapper tool which greatly simplifies the database programing when compared to using JDBC directly.                   Step1: ...
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Remote actors – discovering Akka

Assume our test application became a huge success and slowly a single server is not capable of handling growing traffic. We are faced with two choices: replacing our server with a better ...
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Avoiding FORs – Anti-If Campaign

Have you ever wondered how FORs impact your code? How they are limiting your design and more important how they are transforming your code into an amount of lines without any human ...
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Getting rid of null parameters with a simple spring aspect

What is the most hated and at the same time the most popular exception in the world? I bet it’s the NullPointerException. NullPointerException can mean anything, from simple “ups, ...
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Introduction to Enterprise Integration Patterns

In this blog entry we will go through some of Enterprise Integration Patterns. These are known design patterns that aims to solve integration challenges. After reading this one would ...
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Making Plain Old Java OSGi Compatible

Although OSGi is increasingly popular in the Java world, there are many Java applications and libraries that have not been designed to work in OSGi. Sometimes you may need to run such ...
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