Core Java
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How JVMTI tagging can affect GC pauses
This post is analyzing why and how Plumbr Agents extended the length of GC pauses on certain occasions. Troubleshooting the underlying problem…
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Do not unit test bugs
Before getting to the topic of the title let’s have a simple programming sample. On the programming task I will…
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Inconsistent operation widen rules in Java
Overview When you perform a unary or binary operation in Java the standard behaviour is to use the widest operand…
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JMH: How to setup and run a JMH benchmark
Health Warning! This post describes how to setup and run a simple JMH benchmark. Micro benchmarks are notoriously difficult to get…
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Top 5 Use-Cases For Nested Types
There has been an interesting discussion on reddit, the other day Static Inner Classes. When is it too much? First,…
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Functional Factory Pattern
Do you want a REALLY quick way to make a Factory object? Then lambdas or other function-passing is what you…
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Java8 Multi-threading ForkJoinPool: Dealing with exceptions
One of the main motivations behind the introduction of Java8 lambdas was the ability to be able to use multicores…
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JDBC Tutorial – The ULTIMATE Guide (PDF Download)
In this post, we feature a comprehensive JDBC Tutorial (Java Database Connectivity), an API provided by Oracle that allows programmers…
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Programmatically Determining Java Class’s JDK Compilation Version
When it is necessary to determine which JDK version was used to compile a particular Java .class file, an approach…
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