Core Java
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Tutorial: logging during tests
Logging is a popular solution to show what the software is doing while it is running. But what happens to…
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Java 8 Streams API: Grouping and Partitioning a Stream
This post shows how you can use the Collectors available in the Streams API to group elements of a stream…
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Benchmark: How Java 8 Lambdas and Streams Can Make Your Code 5 Times Slower
How Java 8 lambdas and streams perform compared to longstanding implementations? Lambda expressions and streams received an heartwarming welcome in…
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Introduction in Java TDD – part 2
Hello again! In the previous blog post I explained TDD theory in general, without close reference to Java, but in…
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Introduction in Java TDD – part 1
Welcome to an introduction in Test Driven Development (TDD) series. We will talk about Java and JUnit in context of…
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Java 8 Streams: filter and predicate negation
Recently there was an interesting discussion on the use of predicate negation in the .filter method on a stream by…
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Using a reactive stream as a data source for Drools
A few months ago we started redesigning the Drools lowest level executable model and making it accessible to end user…
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Eclipse IDE on JDK 9 Early Access with Project Jigsaw
I wrote a few weeks ago about getting Eclipse Neon running on Java 9 (though, I had mistakenly and embarrassingly left “Mars”…
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From Arrays to Streams and Back with Java 8
Not long ago we upgraded some Eclipse plug-in projects to Java 8. And never looked back since. Among many other…
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