Author Archives: Markus Karg

About Markus Karg

Java Guru with +30 years of experience in professional software development. I travelled the whole world of IT, starting from Sinclair's great ZX Spectrum 48K, Commodore's 4040, over S/370, PCs since legendary XT, CP/M, VM/ESA, DOS, Windows (remember 3.1?), OS/2 WARP, Linux to Android and iOS... and still coding is my passion, and Java is my favourite drug!

Grab a Pocket Sky give-away! – The Two Minutes Tuesday 012

Hey guys! Be lucky and get one of two free Pocket Sky wearables donated by Active Wearables (https://www.pocket-sky.com/). Time to sum up after one month of testing light-therapy-to-go. Does Pocket Sky work? Is there a risk? Is it worth the … Continue reading

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JAX-RS Done Right! (XI. – Migration to JAX-RS 3.0)

Hey guys! How’s it going? In today’s episode of “JAX-RS Done Right!” I will demonstrate how to migrate an existing JAX-RS application to the latest release of the Jakarta REST API aka JAX-RS 3.0. Code example can be found on … Continue reading

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Jakarta EE 9 is here SOON! – The Two Minutes Tuesday 011

Hey guys! Jakarta EE 9 is here ON FRIDAY and you should IMMEDIATELY MIGRATE your existing applications — even if there are no new features in the box. As future versions of Jakarta EE will provide lots of new feature, … Continue reading

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Jakarta EE 9 Premiere – Live Coding with Ivar Grimstad | Tonite with me on November 20th, 2020 at 20:00 CET

Hey guys! How’s it going? Chat LIVE #WithMe and Ivar Grimstadt (Jakarta EE Developer Advocate) while we are live coding on Jakarta EE 9’s premiere night! This is THE Jakarta EE fun event that you definitively MUST NOT miss in … Continue reading

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JAX-RS Done Right! (IX. – Default Entity Providers)

Hey guys! How’s it going? Separating domain logic of the http body handling from technical aspects is easy in JAX-RS thanks to Entity Providers. In today’s episode of “JAX-RS Done Right!” we introduce Separation of Concerns to only have pure … Continue reading

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Fighting Winter Blues with Pocket Sky! – The Two Minutes Tuesday 010

Hey guys! In today’s tech review I’m unboxing “Pocket Sky”: A really cool and stylish lifestyle wearable which allegedly reduces tiredness, winter blues, and jet lag and helps shift workers. In one month we will see what my résumé is! … Continue reading

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Guest on “Studio Jakarta EE”

Yesterday I had the honour to be guest on the YouTube show Studio Jakarta EE, and had a nice chat with its host Ivar Grimstadt (Jakarta EE Developer Advocate at the Eclipse Foundation).

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Java API Enhancements

Hey guys! How’s it going? The Java SE API is enhanced in detail with each new generation of the JRE, besides the major JEPs lineup. 09: https://cr.openjdk.java.net/~iris/se/10/latestSpec/apidiffs/overview-summary.html 10: https://cr.openjdk.java.net/~iris/se/10/latestSpec/apidiffs/overview-summary.html 11: https://cr.openjdk.java.net/~iris/se/11/latestSpec/apidiffs/overview-summary.html 12: https://cr.openjdk.java.net/~iris/se/12/latestSpec/apidiffs/overview-summary.html 13: https://cr.openjdk.java.net/~iris/se/13/latestSpec/apidiffs/overview-summary.html 14: https://cr.openjdk.java.net/~iris/se/14/latestSpec/apidiffs/overview-summary.html 15: https://cr.openjdk.java.net/~iris/se/15/latestSpec/apidiffs/overview-summary.html The … Continue reading

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Head Crashing Comedy Special on Halloween with Live Chat

Stay tuned for our Comedy Special on Halloween Premiere at 17:00 CET! In Epsiode 20 of Head Crashing Informatics on YouTube, you can join Leo and me preparing our Horror party night… Even better, Leo and me are present in … Continue reading

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Coding is a DRUG! – The Two Minutes Tuesday 008

Hey guys! Do you know that euphoria when you tried and tried and nothing worked out, but then your code suddenly works? Like the best day you every had in your life? You immediately want to try out the next … Continue reading

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