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Java SE 8 new features tour: Functional programming with Lambda Expression

This article of the “Java SE 8 new features tour” series will deep dive into understanding Lambda expressions. I will show you a few different uses of Lambda Expressions. They all ...
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Getting an Infinite List of Primes in Java

A common problem is to determine the prime factorization of a number. The brute force approach is trial division (Wikipedia, Khan Academy) but that requires a lot of wasted effort if ...
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Parsing an Excel File into JavaBeans using jXLS

This post shows how you can use jXLS to parse an Excel file into a list of JavaBeans. Here is a generic utility method I wrote to do that:                 /** * ...
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Tracing SQL statements in JBoss AS 7 using a custom logging handler

Using an ORM to abstract from your specific database and to let it create and issue all the SQL statements you would have to write by hand yourself seems handy. This is what made ORM ...
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Spring Integration Java DSL sample – further simplification with Jms namespace factories

In an earlier blog entry I had touched on a fictitious rube goldberg flow for capitalizing a string through a complicated series of steps, the premise of the article was to introduce ...
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You Want to Become a Software Architect? Here is Your Reading List!

How do you become a Software Architect? Well, I guess the best way would be to do about two dozen very different projects in different roles, with as many different technologies as ...
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gonsole weeks: oops – it’s a framework

While Eclipse ships with a comprehensive Git tool, it seems that for certain tasks many developers switch to the command line. This gave Rüdiger and me the idea, to start an open source ...
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Adding @atomic operations to Java

Overview How might atomic operations work in Java, and is there a current alternative in OpenJDK/Hotspot it could translate to. Feedback In my previous article on Making operations ...
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Logging or Commenting ?

When my recent article was republished on dzone Jonathan Fisher added a valuable comment stating: … I think I have something else you should write an article on: “Logging or Commenting?” ...
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How to use CopyOnWriteArraySet in Java with Example

CopyOnWriteArraySet is little brother of CopyOnWriteArrayList class. These are special purpose collection classes which was added on JDK 1.5, along with their most popular cousin ConcurrentHashMap. ...
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