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GROUP BY ROLLUP / CUBE

Every now and then, you come across a requirement that will bring you to your SQL limits. Many of us probably give up early and calculate stuff in Java / [or your language]. Instead, ...
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Using a ThreadPoolExecutor to Parallelize Independent Single-Threaded Tasks

The task execution framework, introduced in Java SE 5.0, is a giant leap forward to simplify the design and the development of multi threaded applications. The framework provides facilities ...
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LeWeb – 2011 – Round up

Just a couple of hours before I head up to the airport, I will write my last post related to LeWeb. This time I will focus on the conference itself. Having attended a few developer ...
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Oracle JRockit Mission Control 4.1 released

Oracle released a new version of their former JRockit-only tooling Mission Control Suite (JRMC). The 4.1 version is a minor version upgrade which directly follow the 4.0.1 which was ...
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Overload API methods with care

Overloading methods is a strong concept in API design, especially when your API is a fluent API or DSL (Domain Specific Language). This is the case for jOOQ, where you often want to ...
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Reusing Generated JAXB Classes

In this post I will demonstrate how to leverage the -episode XJC extension to reuse classes previously generated from.an XML schema. This is useful when an XML schema is imported by ...
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Cloning of Serializable and Non-Serializable Java Objects

Frequently developers rely on 3d party libraries to avoid reinventing the wheel, particularly in the Java world, with projects like Apache and Spring so prevalent. When dealing with ...
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Java Recursion basics

For those who don’t know what recursion is (and like a good laugh), click on this link: Google search: Recursion and click on the “did you mean…” item. Hopefully ...
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Musing on mis-usings: ‘Powerful use, Damaging misuse’

There’s an old phrase attributed to the former British Prime Minister Benjamin Disraeli which states there are three types of lies: “lies, damn lies and statistics”.  ...
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Ignoring Self-Signed Certificates in Java

A problem that I’ve hit a few times in my career is that we sometimes want to allow self-signed certificates for development or testing purposes. A quick Google search shows the trouble ...
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