Category Archives: Java

I contributed to JCommander: Multi-Parameter Validation | Java Coding | Head Crashing Informatics 62

#JCommander (https://jcommander.org/) is a really cool micro-framework for command-line parsing in #Java ☕. While it has great parameter validation (even extensible), it lacks support for multi-parameter validation. So I simply added it, and since last week it is part of … Continue reading

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SCARY Performance! – record.hashCode() | Head Crashing Informatics 61

`record` is a cool and comfortable keyword in #Java, as it does a lot of things for you. But is the resulting code really FAST? This video reveals SCARY performance! If you like this video, please give it a thumbs … Continue reading

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OpenJDK-Insider packt aus! | Mein Erfahrungsbericht als Contributor | Head Crashing Informatics 60

Schockierend! In diesem exklusiven #Undercover-Tatsachenbericht packe ich schonungslos aus, wie unglaublich schlimm es mir als #JRE-Contributor im #OpenJDK-Team ergangen ist. Die nackte Wahrheit, ungeschminkt und unverblümt! Das definitive MUST-SEE für jeden, der Contributor bei OpenJDK werden möchte! 😉 Bitte nehmt … Continue reading

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Coding Microservice From Scratch (Part 7 of 7) | JAX-RS Done Right! | Head Crashing Informatics 59

Write a pure-Java microservice from scratch, without an application server nor any third party frameworks, tools, or IDE plugins — Just using JDK, Maven and JAX-RS aka Jakarta REST 3.1. This seven part-video series shows you the essential steps! In … Continue reading

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Coding Microservice From Scratch (Part 6 of 7) | JAX-RS Done Right! | Head Crashing Informatics 58

Write a pure-Java microservice from scratch, without an application server nor any third party frameworks, tools, or IDE plugins — Just using JDK, Maven and JAX-RS aka Jakarta REST 3.1. This seven part-video series shows you the essential steps! In … Continue reading

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Coding Microservice From Scratch (Part 5 of 7) | JAX-RS Done Right! | Head Crashing Informatics 57

Write a pure-Java microservice from scratch, without an application server nor any third party frameworks, tools, or IDE plugins — Just using JDK, Maven and JAX-RS aka Jakarta REST 3.1. This seven part-video series shows you the essential steps! Episode … Continue reading

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Coding Microservice From Scratch (Part 4 of 7) | JAX-RS Done Right! | Head Crashing Informatics 56

Write a pure-Java microservice from scratch, without an application server nor any third party frameworks, tools, or IDE plugins — Just using JDK, Maven and JAX-RS aka Jakarta REST 3.1. This seven part-video series shows you the essential steps! In … Continue reading

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Coding Microservice From Scratch (Part 3 of 7) | JAX-RS Done Right! | Head Crashing Informatics 55

Write a pure-Java microservice from scratch, without an application server nor any third party frameworks, tools, or IDE plugins — Just using JDK, Maven and JAX-RS aka Jakarta REST 3.1. This seven part-video series shows you the essential steps! In … Continue reading

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Coding Microservice From Scratch (Part 2 of 7) | JAX-RS Done Right! | Head Crashing Informatics 54

Write a pure-Java microservice from scratch, without an application server nor any third party frameworks, tools, or IDE plugins — Just using JDK, Maven and JAX-RS aka Jakarta REST 3.1. This seven part-video series shows you the essential steps! In … Continue reading

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Coding Microservice From Scratch (Part 1 of 7) | JAX-RS Done Right! | Head Crashing Informatics 53

Write a pure-Java microservice from scratch, without an application server nor any third party frameworks, tools, or IDE plugins — Just using JDK, Maven and JAX-RS aka Jakarta REST 3.1. This seven part-video series shows you the essential steps! In … Continue reading

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