Tag Archives: Tutorial

TYPE-SAFE Generic Java Annotation Parameters | Modern Java | Head Crashing Informatics 33

Posted on 12. June 2021 by Markus Karg

#Java’s Annotation Parameters are a great way to configure strategies in a declarative way, but how to do that in a TYPE-SAFE manner using #Generics? I nearly drove nuts to find a good example for you on the web, and … Continue reading →

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Java File I/O Performance Shootout | Modern Java | Head Crashing Informatics 32

Posted on 29. May 2021 by Markus Karg

Java’s way to access files changed a lot in past generations, and as files play an essential role in many #Java applications, it is time to look into the #Performance of the different API’s available for #FileIO: How does good … Continue reading →

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Migrating a real-world JavaFX App from JDK 8 to JDK 16 | Modern Java | Head Crashing Informatics 31

Posted on 1. May 2021 by Markus Karg

Hey guys! How’s it going? I’m migrating a JavaFX chat client from #Java8 to #Java16 before your own eyes to demonstrate that problems are no reason to give up! Join me while I am migrating a real-world application, a chat … Continue reading →

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Foreign Linker API: Java native access without C | Modern Java | JDK16 | Head Crashing Informatics 27

Posted on 6. February 2021 by Markus Karg

Hey guys! How’s it going? The #ForeignLinkerAPI of #JDK16 allows to invoke native code, typically DLLs or shared objects written in the C language, without neither a #JNI wrapper written in C, nor a third party library like #JNA. Due … Continue reading →

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Spare keystrokes with the record keyword | Modern Java | JDK 16 | Head Crashing Informatics 26

Posted on 23. January 2021 by Markus Karg

Hey guys! How’s it going? The record keyword is ready for production use in JDK 16, which officially will be here mid March. Spare lots of keystrokes and get rid of code generators and IDE magic with this new keyword! … Continue reading →

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Java 15 vs Java 8 | Modern Java Features | Head Crashing Informatics 25

Posted on 9. January 2021 by Markus Karg

Hey guys! How’s it going? Backporting an application from Java 15 to Java 8 to convince you how much better coding in modern Java is! Java 15’s modern language features and API enhancements makes coding so much better! In this … Continue reading →

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JAX-RS Done Right! (X. – Custom Entity Providers)

Posted on 12. December 2020 by Markus Karg

Hey guys! How’s it going? Let’s write custom entity providers to process any document formats we like with JAX-RS – without sacrifying SoC! Today’s episode of “JAX-RS Done Right!” keeps Separation of Concerns while adding support for ANY document type … Continue reading →

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

Posted on 28. November 2020 by Markus Karg

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

Posted on 14. November 2020 by Markus Karg

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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Java API Enhancements

Posted on 17. October 2020 by Markus Karg

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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