https://peertube.headcrashing.eu/about/instancehttps://peertube.headcrashing.eu/videos/localhttps://peertube.headcrashing.eu/w/kuxfxDSmAAhTDN4zQc3zcAhttps://peertube.headcrashing.eu/lazy-static/thumbnails/de330235-3fd1-4913-a205-4e46effa90c2.jpgChannel Trailer | Trailer**Channel Trailer 2020** *Stay safe and Party on!* 🤘 Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/9dd9b815-cb66-490b-97f2-742613ed3004/373c1df9-1afd-41c9-84a2-fb1c3911a4e8-master.m3u8https://peertube.headcrashing.eu/videos/embed/kuxfxDSmAAhTDN4zQc3zcA11522025-06-21T12:19:23.908ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/oLrLLhLy4z7kvGu6oWyTe6https://peertube.headcrashing.eu/lazy-static/thumbnails/222631b3-a944-4f98-8655-f16e364d03f9.jpgHead Crashing Informatics - Episode Zero - "The Beta Test" | Making-ofBeta test of our current setup and workflow, still in low quality as our audio and video hardware still is stuck in the supply chain. :-( Time for a Making-of! *Stay safe and... Party on!* 🤘 Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/b85da8a8-e928-4525-9c1b-c78775fd6e83/1c5c64b6-ea63-4560-bc0d-34e3baa06c0b-master.m3u8https://peertube.headcrashing.eu/videos/embed/oLrLLhLy4z7kvGu6oWyTe6115582025-06-21T12:36:31.970ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/eUkp1C59HPq736QNNSvKEihttps://peertube.headcrashing.eu/lazy-static/thumbnails/abfb96fb-fa75-4dfc-81ff-094444bd10f9.jpgGitlab hosted by Eclipse Foundation - Head Crashing Informatics 01 | News**Amazing news! The Eclipse Foundation moves to Belgium and hosts Gitlab in Switzerland.** Stay safe and... Party on! 🤘 Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/70956eaa-21ae-434a-8e9f-3992c5871ca1/91003141-6b49-4b44-ba83-359e9cf10475-master.m3u8https://peertube.headcrashing.eu/videos/embed/eUkp1C59HPq736QNNSvKEi347552025-06-21T16:06:27.400ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/n4Sym3VDe5CbUdfuQsjnyChttps://peertube.headcrashing.eu/lazy-static/thumbnails/b40b9b88-c266-413b-ae85-ff1f9cd60de5.jpgI got a mike! - Head Crashing Informatics 02 | Making-Of / Behind the Scenes**My Sennheiser MK4 and Focusrite Scarlet have arrived! What an amazing day!** Time for a Making-of! Stay safe and... Party on! 🤘 Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/aa9a4cea-47e9-4520-8de1-e27a4d9551c8/e19cbe40-99f9-453a-98f8-b2b29e595ecd-master.m3u8https://peertube.headcrashing.eu/videos/embed/n4Sym3VDe5CbUdfuQsjnyC130562025-06-21T16:14:01.206ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/sZ6y4V38GffhWAXXcbZRnNhttps://peertube.headcrashing.eu/lazy-static/thumbnails/bf939db0-064a-4050-952e-63e61e7e5656.jpgDo you know Gitpod? - Head Crashing Informatics 03 | News**Gitpod** is an amazing IDE running in a web browser right out of the cloud, so you can code Java without installing anything on your laptop! Join me with the first steps in debugging a REST server inside the browser in this video. *Stay safe and... Party on!* 🤘 Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/da866c11-42cb-4cc4-b6d4-aacd09da537c/4eab8f11-7d4a-4c5f-af3b-53b4e24518ad-master.m3u8https://peertube.headcrashing.eu/videos/embed/sZ6y4V38GffhWAXXcbZRnN684562025-06-22T09:17:48.701ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/jcCxN3Eh2osMZo3EWi5a4Dhttps://peertube.headcrashing.eu/lazy-static/thumbnails/e228e718-683e-4e72-9470-7b866daa01ed.jpgJAX-RS Status Quo and Roadmap (Jakarta One 2019) | Conference TalkPre-Recording of my session "JAX-RS Status Quo and Roadmap" at **Jakarta One 2019**. Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/93643372-20d1-4fcc-816c-440100611407/474efc69-acac-4ab2-9a05-e043a95573bc-master.m3u8https://peertube.headcrashing.eu/videos/embed/jcCxN3Eh2osMZo3EWi5a4D2974022025-06-22T13:16:20.956ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/tx7BeHEaAVZuoyDhBGHeR1https://peertube.headcrashing.eu/lazy-static/thumbnails/67793a8a-9777-4e5b-abc7-57734b8c6271.jpgBiggest Maven Version Ranges Mistakes - Head Crashing Informatics 04 | Open Source TutorialWe all think we know how to use Maven Version Numbers, but when it comes to **Version *Ranges*** (to auto-pick bug fixes) we all do common mistakes. In this video you learn to do it right! https://maven.apache.org/pom.html#Version_Order_Specification *Stay safe and... Party on!* 🤘 Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/defedf6a-bca2-45f4-962a-1049ac7d7236/7101e8d5-959c-4b43-bca3-bc7e151208cf-master.m3u8https://peertube.headcrashing.eu/videos/embed/tx7BeHEaAVZuoyDhBGHeR1920552025-06-28T13:26:33.556ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/qWV5Sr1dVGXSoEgTiJi1Eghttps://peertube.headcrashing.eu/lazy-static/thumbnails/4ea26cd7-05ed-4978-8b6e-2150108b2279.jpgJAX-RS Done Right! (I. - Introduction) - Head Crashing Informatics 05 | JAX-RS Tutorial 01Since more than a decade I am part of the group which defines the JAX-RS standard meanwhile, and often I saw people using this API *in a wrong way*. So I thought it is time to tell you **how to do it right** in this new video series! *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/ca0634a0-4565-461f-9d0a-c0867507d7d3/d7af8060-d008-4ca4-8299-357a6e4a9d71-master.m3u8https://peertube.headcrashing.eu/videos/embed/qWV5Sr1dVGXSoEgTiJi1Eg324512025-07-05T06:30:43.547ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/gyanMzDpracg7HY7wJVa8nhttps://peertube.headcrashing.eu/lazy-static/thumbnails/7040249e-a82c-429c-b2bc-828570fcb926.jpgContributing to Open Source Made Easy - Head Crashing Informatics 06 | Open Source TutorialYou always wanted to **contribute to an open source project**, but feared the time to invest or the paperwork to sign? Or you just didn't know where to chime in? **Now you get a jumpstart!** *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/7df6a891-7c2d-463c-aab9-c6a770f48a17/085ffe91-8c2d-481c-9f77-3e5810c14cf2-master.m3u8https://peertube.headcrashing.eu/videos/embed/gyanMzDpracg7HY7wJVa8n1314572025-07-12T11:19:19.364ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/1XwVN8HxtzqDrKUz71ba7Vhttps://peertube.headcrashing.eu/lazy-static/thumbnails/0dff6599-a4a3-4d64-ab67-9c7765aa8d0b.jpgJAX-RS Done Right! (II. - Hello World Server) - Head Crashing Informatics 07 | JAX-RS Tutorial 02Let's get our hands dirty and begin coding! In this episode we will turn a Java SE variant of "Hello, world!" into a **JAX-RS server**, to learn the essentially needed parts from scratch! Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/07c0f794-14ce-4cb2-a53d-d9367ffaa865/e84dcbdd-5305-4c8d-aaf6-ce8b2962cae8-master.m3u8https://peertube.headcrashing.eu/videos/embed/1XwVN8HxtzqDrKUz71ba7V1503012025-07-20T13:58:02.468ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/3Gi9nDUNRVNKWCcHNT4ikjhttps://peertube.headcrashing.eu/lazy-static/thumbnails/7ae71a7e-fe19-4cbf-b4e3-931182e713f3.jpgJAX-RS Done Right! (III. - Client API) - Head Crashing Informatics 08 | JAX-RS Tutorial 03Today I will show you **how to use the JAX-RS Client API** to write a client for a "Hello, world!" server. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/15d297fd-840c-4c2a-b5d1-24fdacdbeeec/3690e7bf-3e7b-43a9-ad11-e3c123aaa6a7-master.m3u8https://peertube.headcrashing.eu/videos/embed/3Gi9nDUNRVNKWCcHNT4ikj752002025-07-27T10:27:46.482ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/rREGMaJSYyQrUZGSnM6sBwhttps://peertube.headcrashing.eu/lazy-static/thumbnails/b50030e2-c5e3-4b5c-94a4-5ef1fe1d97fc.jpgJakarta EE 9 Milestone 1 SNEAK PEEK - Head Crashing Informatics 09 | Reacts on Ivar's Cupcake**Jakarta EE 9 Milestone 1** was released in June, and Ivar asked for cupcakes. So here is mine: Cherry Cheesecake with Namespace Migration. Like to taste JAX-RS on a bed of Java SE 11? Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JakartaEE9 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/d163c34a-3c11-4520-a9f4-20c45d4ed3ec/9b51b93f-4500-4009-a1f1-1feb8ee570c6-master.m3u8https://peertube.headcrashing.eu/videos/embed/rREGMaJSYyQrUZGSnM6sBw670002025-08-09T17:23:26.919ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/bgLS3qd8V5EgbkWXvtCBLzhttps://peertube.headcrashing.eu/lazy-static/thumbnails/f644b3a2-180f-4295-8853-d6037b220140.jpgJAX-RS Done Right! (IV. - Static Routing) - Head Crashing Informatics 10 | JAX-RS Tutorial 04Let's practice different STATIC routing variants using **@Path**. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/532f30d9-e975-42b4-b18e-7ce392efe935/030962b2-16a2-4d7f-848e-7c90ddfcb64e-master.m3u8https://peertube.headcrashing.eu/videos/embed/bgLS3qd8V5EgbkWXvtCBLz366532025-08-17T17:01:08.840Zjax-rsYESMarkus KargNOhttps://peertube.headcrashing.eu/w/4xwKm5xiDh9DM1Lfv7aXJihttps://peertube.headcrashing.eu/lazy-static/thumbnails/dbb93cb4-30bd-41fc-a319-c07d7cfdf36e.jpgJAX-RS Done Right! (V. - Dynamic Routing) - Head Crashing Informatics 11 | JAX-RS Tutorial 05Dynamics come into play: **DYNAMIC routing variants using SUBRESOURCES**. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Bustin Loose by Audionautix licenced under "Creative Commons Attribution" (https://creativecommons.org/licenses/by/4.0/). Artist: http://audionautix.com/ Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g) #Dardahttps://peertube.headcrashing.eu/static/streaming-playlists/hls/1cb26bec-6d8e-46cb-9def-5c19c4c074b9/473346f2-b0d2-498d-9c06-0dabb7c9fc4d-master.m3u8https://peertube.headcrashing.eu/videos/embed/4xwKm5xiDh9DM1Lfv7aXJi486012025-12-18T14:23:49.452Zjax-rsYESMarkus KargNOhttps://peertube.headcrashing.eu/w/wBin3hgKcUJkFuVR7vQDJNhttps://peertube.headcrashing.eu/lazy-static/thumbnails/175fb90b-0a73-4b6a-a710-f1ec0a2f0621.jpgJAX-RS Done Right! (VI. - RegEx Routing) - Head Crashing Informatics 12 | JAX-RS Tutorial 06Let's provide fine control in our **JAX-RS routing using regular expressions** and media type selectors. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0}(https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g) #RegExhttps://peertube.headcrashing.eu/static/streaming-playlists/hls/f7dfe455-0a8d-48b5-a627-c7605afda0b6/f5572a50-e69c-4ec7-a1cb-868f1324e905-master.m3u8https://peertube.headcrashing.eu/videos/embed/wBin3hgKcUJkFuVR7vQDJN478512025-12-20T18:29:19.719Zregexjavajax-rsYESMarkus KargNOhttps://peertube.headcrashing.eu/w/ekLX9bwrqLL8rn5ZxCG5YThttps://peertube.headcrashing.eu/lazy-static/thumbnails/c8392cfe-7b2a-47c6-9ce1-bc53b25bc5a9.jpgJAX-RS Done Right! (VIII. - Parameter Basics) - Head Crashing Informatics 13 | JAX-RS Tutorial 07Parameters are essential to any RESTful application, as they allow dynamic reaction of the server code. Today we learn **how to transport parameters by HTTP using JAX-RS Client and Server APIs**. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) Production: [Peilung 0](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g) Drone: Mavic 2 Prohttps://peertube.headcrashing.eu/static/streaming-playlists/hls/6c09a2d5-583a-4f78-8f74-50ee75f2d593/8bfd60d8-3164-47af-ab9f-15489b93fcda-master.m3u8https://peertube.headcrashing.eu/videos/embed/ekLX9bwrqLL8rn5ZxCG5YT338012025-12-21T10:29:51.562ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/qEomwyDqsoCygKkFJiuypnhttps://peertube.headcrashing.eu/lazy-static/thumbnails/66ee6823-b742-424c-ad8f-8c5c70301ffc.jpgJAX-RS Done Right! (VIII.-Advanced Parameter Topics)-Head Crashing Informatics 14|JAX-RS Tutorial 08In today's episode of "JAX-RS Done Right!" we will look into more **advanced parameter topics** that help us to make our code look much cleaner and support **separation of concerns**. With the help of a parameter converter provider we will strip all parameter handling from our JAX-RS resource and deal solely with a "purified" domain object. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/c7b75e00-087a-49eb-8229-5700e7be3cbb/28732a75-5d0e-4d53-9e89-ff4f3dd054fa-master.m3u8https://peertube.headcrashing.eu/videos/embed/qEomwyDqsoCygKkFJiuypn469012025-12-22T14:06:47.815ZjaxrsjavaYESMarkus KargNOhttps://peertube.headcrashing.eu/w/kTGCNpcAVjMh9KCouvzcihhttps://peertube.headcrashing.eu/lazy-static/thumbnails/2591e5c1-ab0b-406a-abfe-120785746209.jpgUNBOXING: Why Canon R6? - Head Crashing Informatics 15 | Making-Of / Behind the ScenesI'm unboxing our brand new **Canon EOS R6**! We were under **the first customers holding it in our hands in Germany**! We recently bought a Canon EOS R6 in addition to our older Canon EOS 5D Mark III, as it has some neat features that we urgently wanted to have! This video tells you the reasons and demonstrates what possibilities this brand new model gives us. If you like this video, please give it a thumbs up, share it, subscribe to my channel, or become my patreon https://www.patreon.com/mkarg. Thanks! :-) *Stay safe and... Party on!* 🤘 #Canon #EOS #R6 #Unboxing Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery by [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/a1159bd3-bbac-434b-95f8-a3a9a61cf26e/d00fe7bb-7f85-46b3-ba93-2c31958e060a-master.m3u8https://peertube.headcrashing.eu/videos/embed/kTGCNpcAVjMh9KCouvzcih265022025-12-23T12:42:43.644ZunboxingcanonYESMarkus KargNOhttps://peertube.headcrashing.eu/w/vmEoh6HR5emY8GmL1TW8Rxhttps://peertube.headcrashing.eu/lazy-static/thumbnails/6757a8b3-fd53-4e9d-ad93-145d4ec834ce.jpgMulti-Release Jars Made Easy - Head Crashing Informatics 16 | Advanced Java**Multi-Release** Jars allow to deliver a fully backwards compatible archive which uses the best implementation for each Java release. In this video I will show you how easy you create it using Maven. *Stay safe and... Party on!* 🤘 #Java Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: stkarg.design (https://www.instagram.com/stkarg.design/) A Peilung 0 Production (https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/edbb8d34-4c86-408c-861c-cb23106318d5/256263cb-487d-4c0f-a679-8f006f981461-master.m3u8https://peertube.headcrashing.eu/videos/embed/vmEoh6HR5emY8GmL1TW8Rx797052025-12-24T10:20:24.091Zjavamulti-realease jarYESMarkus KargNOhttps://peertube.headcrashing.eu/w/ov2mzdYHkRBvByj3PuCK7Whttps://peertube.headcrashing.eu/lazy-static/thumbnails/498d902c-9dfc-471d-a6a9-dccf2dec5f2e.jpgJava Language Evolution - Head Crashing Informatics 17 | Advanced JavaThis is **not your dad's Java** anymore! 😲 The Java programming language has changed massively since Java 7, after introduction of the keyword var, records, switch expressions, and many more syntax changes. Modern Java feels quite differently and allows new idioms. Time to look into the language changes of nearly one decade, to get an idea how to write modern code style, and to express your ideas more concise. Also, in future we will have even better means to express ourselfs in terms of syntax instead of terms of API or architecture: Valhalla and Loom will further move Java into a readable and well-performing language. *Stay safe and... Party on!* 😲 08: lambda expressions, method references, interface default methods, interface static methods, functional interfaces, effectively final variables, repeating annotations 09: https://cr.openjdk.java.net/~iris/se/9/latestSpec/java-se-9-jls-diffs.pdf 10: https://cr.openjdk.java.net/~iris/se/10/latestSpec/java-se-10-jls-diffs.pdf 11: https://cr.openjdk.java.net/~iris/se/11/latestSpec/java-se-11-jls-draft-diffs.pdf 12: https://cr.openjdk.java.net/~iris/se/12/latestSpec/java-se-12-jls-diffs.pdf 13: https://cr.openjdk.java.net/~iris/se/13/latestSpec/java-se-13-jls-diffs.pdf 14: https://cr.openjdk.java.net/~iris/se/14/latestSpec/java-se-14-jls-diffs.pdf 15: https://cr.openjdk.java.net/~iris/se/15/latestSpec/java-se-15-jls-fr-diffs.pdf Ondro's Java Language diff: https://ondro.inginea.eu/index.php/new-features-between-java-8-and-java-14/#language-features Jewellery by [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g) Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0)https://peertube.headcrashing.eu/static/streaming-playlists/hls/b6367468-3eff-47a5-a473-89df114b7dde/0dd725f1-0b25-4bda-b3ab-a234c5b50c69-master.m3u8https://peertube.headcrashing.eu/videos/embed/ov2mzdYHkRBvByj3PuCK7W746042025-12-25T16:30:24.158ZjavaYESMarkus KargNOhttps://peertube.headcrashing.eu/w/4XKYMVQQA4ocjA8cME2pPzhttps://peertube.headcrashing.eu/lazy-static/thumbnails/e40ea06d-49ed-4514-a9aa-add8fb811c3e.jpgJava Startup Performance - Head Crashing Informatics 18 | Advanced JavaOne of the major pain points even with the latest Java generation is its terribly **slow startup time**. There are things that you can do to improve it, so here is how to do them and how much they actually improve the situation! *Stay safe and... Party on!* 🤘 #Java Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery by [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/20146d2c-4180-43b4-ae23-8b019d0180eb/33bc8962-528a-4945-ba84-b51ee0fd65c5-master.m3u8https://peertube.headcrashing.eu/videos/embed/4XKYMVQQA4ocjA8cME2pPz723022025-12-27T18:12:48.185ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/aQPLRNXJb4dNJWmZGAhX4Zhttps://peertube.headcrashing.eu/lazy-static/thumbnails/55a9ddaf-9fb2-4584-a460-50827f70b92d.jpgJava API Enhancements - Head Crashing Informatics 19 | Advanced JavaThe Java SE API is enhanced in detail with each new generation of the JRE, besides the major JEPs lineup. Does it makes sense to look into the small details? This video explains **how to easily detect ALL detail changes**, and why it definitively makes sense to learn about them! If you like this video, please give it a thumbs up, share it, subscribe to my channel, or become my patreon https://www.patreon.com/mkarg. Thanks! :-) *Stay safe and... Party on!* 🤘 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 Java Alamanc provides a brilliant diff view: https://javaalmanac.io/ #Java Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery by [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/4fb363ec-0cbc-4d86-81e4-de90b98e6b83/947a6da8-e12b-4826-b153-a5f8408ae34a-master.m3u8https://peertube.headcrashing.eu/videos/embed/aQPLRNXJb4dNJWmZGAhX4Z439012025-12-28T10:46:21.117ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/6iWR1PYMkYXzoz5V4zudmyhttps://peertube.headcrashing.eu/lazy-static/thumbnails/58074272-2260-429e-8c71-b40579050d09.jpgHappy Halloween - Head Crashing Informatics 20 | Comedy SpecialStay 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 the live chat on YouTube, so you can ask questions, give feedback, or just say hello! Have lots of fun with this comedy special of Head Crashing Informatics! *Stay safe and... Party on!* 🤘 If you like this video, please give it a thumbs up, share it, subscribe to my channel, or become my patreon https://www.patreon.com/mkarg. Thanks! :-) #Halloween #Comedy Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery by [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/2aff2309-bded-4b66-ab40-e401ed161ce8/9c88aa46-ac26-4d58-882e-ee525dd83071-master.m3u8https://peertube.headcrashing.eu/videos/embed/6iWR1PYMkYXzoz5V4zudmy393002025-12-29T14:20:50.424ZcomedyhalloweenYESMarkus KargNOhttps://peertube.headcrashing.eu/w/dPps1sX8ncHp6Uy6fKPtsyhttps://peertube.headcrashing.eu/lazy-static/thumbnails/0eb499d8-a965-4205-aaec-ad3c9fb484b3.jpgJAX-RS Done Right! (IX. - Default Entity Providers) -Head Crashing Informatics 21|JAX-RS Tutorial 09Separating 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 domain code in our application when it comes to handling http bodies, while every technical aspect is in separated code. The key for this are Entity Providers (i. e. Renderers and Parsers for a combination of Java Class and Media Type). There even are Default Entity Providers built into JAX-RS, so it is easy to get started with that. In a future episode, we will extend the concept by intoducing our own Custom Entity Providers. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right If you like this video, please give it a thumbs up, share it, subscribe to my channel, or become my patreon https://www.patreon.com/mkarg. Thanks! :-) *Stay safe and... Party on!* 🤘 #JAX-RS Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/67cc125b-7bb2-490a-89ca-dd4ef612afd8/7939862b-be78-495e-aeb1-42a2595ee900-master.m3u8https://peertube.headcrashing.eu/videos/embed/dPps1sX8ncHp6Uy6fKPtsy343002025-12-30T16:53:14.933ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/dCofeonJbzyvwkR39DPbmrhttps://peertube.headcrashing.eu/lazy-static/thumbnails/246ae629-0c73-4ed7-8161-ddc38d8ba9d5.jpgMigrating to JAX-RS 3.0 - JAX-RS Done Right! (XI.) - Head Crashing Informatics 22How to migrate to **#JAXRS 3.0**? Learn it *from a key member* of the Jakarta REST team! 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 Gitlab: https://gitlab.com/mkarg/jaxrs-done-right If you like this video, please give it a thumbs up, share it, subscribe to my channel, or become my patreon https://www.patreon.com/mkarg. Thanks! :-) *Stay safe and... Party on!* 🤘 #Java #JakartaEE9 Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/66422619-a9df-4de9-baba-eb3ab0c337b1/473b87fe-7676-4227-8a0a-a7837d74140e-master.m3u8https://peertube.headcrashing.eu/videos/embed/dCofeonJbzyvwkR39DPbmr670532025-12-31T13:16:30.713ZjaxrsjavaYESMarkus KargNOhttps://peertube.headcrashing.eu/w/s6ndvMMaSq99NYrtqZgnVQhttps://peertube.headcrashing.eu/lazy-static/thumbnails/53984b88-2014-4ec7-9e42-41989187412e.jpgJAX-RS Done Right! (X. - Custom Entity Providers) - Head Crashing Informatics 21 |JAX-RS Tutorial 10Let's write **custom entity providers** to process any document formats we like with #JAXRS - without sacrifying SoC! Today's episode of "JAX-RS Done Right!" keeps Separation of Concerns while adding support for ANY document type - even your own fancy one! So the application only has PURE domain code when it comes to handling http bodies, while the dealing with the new data type happens in separate classes. The key for this are CUSTOM Entity Providers (i. e. renderers and parsers for a combination of Java class and media type OTHER than plain text, json or xml). This is much easier as you might expect, makes you application very flexible, but still keeps the domain logic PERFECTLY READABLE even when you add MANY data types! This builds upon an early episode, in which we learned what Entity Providers are in general, and Default Entity Providers for plain text, json and xml in particular. Code example can be found on Gitlab: https://gitlab.com/mkarg/jaxrs-done-right If you like this video, please give it a thumbs up, share it, subscribe to my channel, or become my patreon https://www.patreon.com/mkarg. Thanks! :-) *Stay safe and... Party on!* 🤘 #Java Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/d34d660f-fb4b-4746-849d-3f18b5de0b4e/26d1c325-35d3-481f-a03f-6d23e9835e1e-master.m3u8https://peertube.headcrashing.eu/videos/embed/s6ndvMMaSq99NYrtqZgnVQ403002026-01-02T13:00:47.821ZYESMarkus KargNOhttps://peertube.headcrashing.eu/w/3APhxzks1upduVyNz66g41https://peertube.headcrashing.eu/lazy-static/thumbnails/3b953aa3-16cd-4c62-9500-8677491bf90a.jpgMerry X-Mas - Head Crashing Informatics 24 | Comedy SpecialCelebrate Christmas with Leo and Markus! Leo and Markus are having fish for Christmas Dinner - but certainly rather unpleasant things do happen... Have fun watching our **Head Crashing Informatics X-Mas Comedy Special**! If you like this video, please give it a thumbs up, share it, subscribe to my channel, or become my patreon https://www.patreon.com/mkarg. Thanks! :-) *Stay safe and... Party on!* 🤘 #Comedy #X-Mas Contains Sound FX by Mike Koenig: Metal Grinder (Attribution 3.0) Jewellery: [stkarg.design](https://www.instagram.com/stkarg.design/) [A Peilung 0 Production](https://www.youtube.com/channel/UCsbwCYGr9sZMeF0z2GpEk8g)https://peertube.headcrashing.eu/static/streaming-playlists/hls/150eb4c0-f8e5-4287-8b18-2209c794d802/0bf374c4-49a7-4900-a54a-27937b45727b-master.m3u8https://peertube.headcrashing.eu/videos/embed/3APhxzks1upduVyNz66g41322012026-01-03T11:36:42.995Zcomedyx-masYESMarkus KargNOhttps://peertube.headcrashing.eu/c/headcrashing/videoshttps://peertube.headcrashing.eu/a/markus/video-channels