Core Java
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The Serialization Proxy Pattern
In my last post, I talked about serialization in general. This one is much more focused and presents a single…
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Calling grandparent methods in Java: you can not
In the article Fine points of protection I detailed how “protected” extends the “package private” access. There I wrote: What…
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Reason for Slower Reading of Large Lines in JDK 7 and JDK 8
I earlier posted the blog post Reading Large Lines Slower in JDK 7 and JDK 8 and there were some…
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How I’d Like Java To Be
I like Java. I enjoy programming in Java. But after using Python for a while, there are several things I…
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Testing System.in and System.out with system-rules
Writing unit tests is an integral part of software development. One problem you have to solve when your class under…
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Java8 Lambdas: Sorting Performance Pitfall EXPLAINED
Written in collaboration with Peter Lawrey. A few days ago I raised a serious problem with the performance of sorting…
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Separating Integration Tests from Unit Tests Using Maven Failsafe & JUnit @Category
Why Unit Tests Should Run Separately From Integration Tests TDD at the Unit Testing level is fairly straight-forward, since classes in unit…
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How to Translate SQL GROUP BY and Aggregations to Java 8
I couldn’t resist. I have read this question by Hugo Prudente on Stack Overflow. And I knew there had to…
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Fork/Join Framework vs. Parallel Streams vs. ExecutorService: The Ultimate Fork/Join Benchmark
How does the Fork/Join framework act under different configurations? Just like the upcoming episode of Star Wars, there has been…
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