Rafael Winterhalter

About Rafael Winterhalter

Rafael is a software engineer based in Oslo. He is a Java enthusiast with particular interests in byte code engineering, functional programming, multi-threaded applications and the Scala language.

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Java 8 default methods can break your (users’) code

At first glance, default methods brought a great new feature to the Java Virtual Machine’s instruction set. Finally, library developers are able to evolve established APIs without ...
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Memory leaks and memory management in Java applications

One of the more prominent features of the Java platform is its automatic memory management. Many people translate this feature erroneously into there are no memory leaks in Java. However, ...
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Extending Guava caches to overflow to disk

Caching allows you to significantly speed up applications with only little effort. Two great cache implementations for the Java platform are the Guava caches and Ehcache. While Ehcache ...
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Advanced Java generics: retreiving generic type arguments

After their introduction in the JDK5, Java generics quickly became an integral element of many Java programs. However, as easy Java generics seem at first glance, as quickly a programer ...
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The infamous sun.misc.Unsafe explained

The biggest competitor to the Java virtual machine might be Microsoft’s CLR that hosts languages such as C#. The CLR allows to write unsafe code as an entry gate for low level ...
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Subtyping in Java generics

Generic types introduce a new spectrum of type safety to Java program. At the same type, generic types can be quite expressive, especially when using wildcards. In this article, I want ...
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Object-based micro-locking for concurrent applications by using Guava

One of the presumably most annoying problems with writing concurrent Java applications is the handling of resources that are shared among threads as for example a web applications’ ...
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cglib: The missing manual

The byte code instrumentation library cglib is a popular choice among many well-known Java frameworks such as Hibernate (not anymore) or Spring for doing their dirty work. Byte code ...
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