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Common Red Flags in Java Development

In several years of developing, reading, reviewing, and maintaining hundreds of thousands of lines of Java code, I have become accustomed to seeing certain “red flags” in ...
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Why does my Java process consume more memory than Xmx?

Some of you have been there. You have added -Xmx option to your startup scripts and sat back relaxed knowing that there is no way your Java process is going to eat up more memory than ...
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Java SE 7 Update 25 – Release-Notes explained.

Yesterday was CPU day. Oracle released the Java SE update 25 with the June Java Critical Patch Update. After the last major update in April this is the last one which does not fit into ...
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Documenting Compliance – About TCKs, Specifications and Testing

Working with software specifications is hard. No matter in which exact filed; you end up with the big question: Does everything ever specified is implemented and tested? Back in the ...
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Design Patterns: Strategy

This time I want to talk about Strategy design pattern. In this way I start articles about behavioral design patterns. These kind of patterns represent some schemas of interaction between ...
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Quicksorting – 3-way and Dual Pivot

It’s no news that Quicksort is considered one of the most important algorithms of the century and that it is the defacto system sort for many languages, including the Arrays.sort ...
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Java 8 lambda walkthrough

For work I have made a presentation about Java 8 project lambda and of course also some simple code illustrating some of the points. The overall reasons for Java 8 are:More concise ...
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Java Security Tutorial – Step by Step guide to create SSL connection and certificates

In our series of articles on applying JEE security we present you another detailed tutorial on how to create a SSL connection and create certificates in a Java EE application. As mentioned ...
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GC Memory Visualizer Tutorial – Part1

As you may have read from past articles, one of the key Java programmer skills to acquire is your ability to understand and assess the health of the JVM such as the Java heap memory ...
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Singleton Design Pattern – A Lion’s Eye View

A few days ago when I was in my home town, one of my sub-juniors from my colleague attended an interview in an MNC and was severely injured in that interview process. I mean he could ...
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