Foojay.io, the Friends Of OpenJDK!

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The podcast of foojay.io, a central resource for the Java community’s daily information needs, a place for friends of OpenJDK, and a community platform for the Java ecosystem — bringing together and helping Java professionals everywhere.

HACE 2 DÍAS

JCON Report, Part 4 - Tips and Tricks for Java Devs (#75)

This is the final part of the JCON 2025 interviews with a lot of tips and tricks!In the three previous podcasts, we featured interviews from the JCON conference on "Being a better Java developer," "Evolutions in Java," and "How to use AI with Java." However, we talked to many more people during the conference, so this podcast focuses on tips and tricks. Let's learn from the many other experienced visitors of JCON.00:00 Introduction00:34 Merlin Bögershausen - OpenRewrite and Azul Intelligence Cloud https://www.linkedin.com/in/merlin-boegershausen 07:08 Eberhard Wolff - Measure developer productivity https://www.linkedin.com/in/eberhardwolff 12:28 Annelore Egger - Dealing with bad code, it's not your fault https://www.linkedin.com/in/anneloredev 15:21 Michael Vitz - Unexpected things you can do with Java https://www.linkedin.com/in/michaelvitz 18:40 Michael Simons - Neo4J database models https://www.linkedin.com/in/michael-simons-196712139 https://motherduck.com/duckdb-book-brief 23:13 Stefan Böhringer - Building a project for education from scratch with Quarkus https://www.linkedin.com/in/datenschauer 28:14 Johannes Rabauer - Learned from earlier projects https://www.linkedin.com/in/johannes-rabauer 30:33 Roland Weisleder - ArchUnit, testing architecture with unit tests https://www.linkedin.com/in/roland-weisleder 34:26 Simon Martinelli - htmx, full stack, Vaadin, JOOQ https://www.linkedin.com/in/simonmartinelli 37:02 Loïc Magnette - Web development, Angular, React, Java community versus others https://www.linkedin.com/in/lomagnette 40:41 Tanja Obradovic - Eclipse Foundation, JakartaEE https://www.linkedin.com/in/tanja-obradovic-095604 49:19 Syed Usman Ahmad - Grafana, Prometheus, monitoring tools, OpenTelemetry https://www.linkedin.com/in/usmanlinux 55:38 François Martin - Tools, chaos testing, Toxyproxy https://www.linkedin.com/in/fran%C3%A7oismartin 01:01:31 Conclusion

1 h y 2 min
28 JUN

JCON Report, Part 3 - AI, ChatGPT, LLM, ML, RAG, MCP, GenAI, and more! (#74)

Let's have an AI Bingo and talk about ChatGPT, LLM, ML, RAG, MCP, GenAI, and more!This is part 3 of the interviews recorded at the JCON conference in May. In the previous parts, you learned more about how to be a better Java developer and how Java has evolved and continues to evolve. Of course, Artificial Intelligence and large language models were hot topics at the conference.This episode collects all the interviews on the AI topic. You will learn more about the different technologies we can use in our Java projects. We also checked with our guests to see how they compare Java to Python for AI-related development.00:00 Introduction00:46 Pasha Finkelshteyn - RAG, MCP https://www.linkedin.com/in/asm0dey 06:17 Simone de Gijt - LLM https://www.linkedin.com/in/simonedegijt 12:30 Steve Poole - AI challenges and dangers https://www.linkedin.com/in/noregressions 18:01 Sandra Ahlgrimm - LangChain4J and Microsoft tools https://www.linkedin.com/in/sandraahlgrimm 21:06 Mary Grygleski - Spring AI, Langchain4J, Quarkus https://www.linkedin.com/in/mary-grygleski 30:25 Jonathan Vila - Sonar, Infrastructure As Code, AI dangers https://www.linkedin.com/in/jonathanvila 35:56 Simon Martinelli - Influence of chat interfaces on UI development + MCP explanation https://www.linkedin.com/in/simonmartinelli 42:13 Emily Jiang - LLM https://www.linkedin.com/in/emilyfhjiang 49:59 Conclusion

50 min
14 JUN

JCON Report, Part 2 – Evolutions in the Java Language and Runtime (#73)

In the second part of our JCON interviews, recorded at the conference in May, we focuses on general evolutions within the Java world and how they influence how we write code and develop applications. We take a look back at the history of Java, discuss new features in the latest release, how Java evolves with OpenJDK projects and JEPS, how Java is used in education, and much more...00:00 Introduction00:19 Steve Poole – Java APIs in a modern way, History of Java https://www.linkedin.com/in/noregressions 06:42 Hanno Embregts - Java 24, Java in education https://www.linkedin.com/in/hannotify/ 12:20 Karl Heinz Marbaise - Stream gatherers, Java evolutions, JEPs, Java stability https://www.linkedin.com/in/khmarbaise/ 26:19 Cay Horstmann - Project Valhalla, Project Loom, JEPs, OpenJDK projects https://www.linkedin.com/in/cay-horstmann-659a4b/ 34:20 Miro Wengner - Java modules, Robo4J https://www.linkedin.com/in/mwengner/ 37:52 Dmitry Chuyko – Improve startup and performance of Java applications in containers https://www.linkedin.com/in/dchuyko/ 42:26 Jens Knipper - Receiving emails with Java, Java improvements over time, writing on Foojay https://www.linkedin.com/in/jens-knipper-87b4a717b/ https://foojay.io/today/receiving-mails-in-java-with-imap-or-pop3/ 46:55 Conclusion

47 min
31 MAY

JCON Report, Part 1 - Grow your career, public speaking, 30 years of Java, greener coding,... (#72)

On May 13th and 14th, Foojay attended the JCON conference in Köln, Germany, where we did over 30 live-stream interviews. In this episode, we present to you the first set of these interviews, in which we focus on celebrating 30 years of Java, how you can grow your career, become a public speaker and writer, make your code more green, a bit of AI (of course...), and how the connections between open-source contributors can be visualized.00:00 Introduction00:37 Richard Fichtner: About JCON https://www.linkedin.com/in/richardfichtner/ https://jcon.one/ 03:27 Bruno Souza: Building your career https://www.linkedin.com/in/brjavaman/ https://careermasterplan.dev 17:09 Markus Westergren: Mentoring and growing to become a senior engineer https://www.linkedin.com/in/markuswestergren/ 21:56 Brian Vermeer: Public speaking, NLJUG, the importance of writing https://www.linkedin.com/in/brianvermeer/ 30:08 Aicha Laafia: Green coding https://www.linkedin.com/in/aicha-laafia-0266a6126/ 36:33 Baruch Sadogursky: History of Java, job changes because of AI https://www.linkedin.com/in/jbaruch/ 44:40 Dmitry Yanter: Connections in open-source projects https://www.linkedin.com/in/dmitry-yanter/ 53:43 Conclusion

54 min
3 MAY

Celebrating 30 Years of Java with James Gosling (#71)

We are celebrating Java's 30th anniversary this May!This is a very special anniversary episode of the Foojay Podcast! As we approach May 23rd, marking exactly 30 years since Java's first beta release in 1995, we're honored to present our first-ever single-guest format. But we have a very special guest for you: James Gosling, the creator of Java! Join us for this exclusive conversation as we explore Java's beginnings, its revolutionary impact on the programming world, its continuous evolution over three decades, and James's insights on where the language is heading. From that groundbreaking beta release over "Write Once, Run Anywhere" to powering billions of devices worldwide, this is the story of Java, told by the man who started it all, the father of Java.Content00:00 Introduction01:06 How did it start 35 years ago?06:21 Java evolved from device controllers to server applications10:30 How does it feel that so many people use Java?12:12 Looking back at the Y2K problem and how it triggered more Java adoption14:58 Does James regret any decisions in Java?18:44 Comparing early-day Java development versus now20:55 About the stability of Java24:14 JavaFX is one of James' favorites of all time25:20 Frustrations about Android and iOS versus Java Phones28:16 How "Write Once, Run Anywhere" was needed for Sun29:23 Windows versus macOS versus Linux for laptops31:32 The very first Java web service in 1994 turned into a dark story33:17 Java in Docker and startup challenges36:59 Garbage Collectors are amazing in many ways39:18 Java-haters didn't use recent versions of Java ...41:51 How Java became much more performant but lost embedded43:08 Developers must be aware of which and how many libraries they use47:40 James loves Kotlin, Scala, and Closure49:42 Ethical responsibility for developers in a challenging job market54:16 AI influence on jobs01:00:20 Advice for junior developers01:02:27 A few of the most remarkable moments in Java history01:07:52 Why James is not a benevolent dictator for life01:09:17 How Java will keep evolving01:12:55 How much is James still involved in Java?01:13:54 Conclusion

1 h y 14 min
24 ABR

Celebrating 5 Years of Foojay! (#70)

On April 25, 2020, Geertjan Wielenga published the first Foojay post. Yes, we are celebrating 5 years since the Friends Of OpenJDK website launch! Today, more than 1,600 posts are on the site, written by over 250 authors. And there is much more to discover within the Foojay world...In this podcast, we look at how Foojay started with founder Geertjan Wielenga. We'll also hear from Gerrit Grunwald about how Foojay's Disco API has become part of your daily work without you realizing it. We also have several of our regular authors and podcast guests who share how Foojay has influenced them (and vice versa).Thank you all for being part of the Foojay community, whether as a listener of this podcast, a visitor to the website, a user of the Disco API, or through any other touchpoint!00:00 Introduction00:58 Grace Jansen https://foojay.io/today/author/grace-jansen 02:44 Geertjan Wielenga about the start and evolution of Foojay https://foojay.io/today/author/geertjan-wielenga/ Foojay on Mastodon: https://foojay.io/today/foojay-mastodon-service-here-it-is/ Java Quick Start Course on Foojay: https://foojay.io/java-quick-start/ JDoodle on Foojay: https://foojay.io/today/integrate-executable-java-code-in-your-blog-posts-part-2-how-to-use-dependencies/ Foojay Slack: https://foojay.io/today/join-slack-com-t-foojay-signup/ Contribute to Foojay: https://foojay.io/today/how-to-submit-your-next-article-on-foojay-io/ 12:24 Richard Fichtner https://foojay.io/today/author/r-fichtner Free JCon tickets: https://pretix.eu/impuls/europe2025/redeem?voucher=FOOJAY-COMMUNITY 13:19 Mary Grygleski https://foojay.io/today/author/mgrygles 15:01 Shai Almog https://foojay.io/today/author/shai-almog 16:59 Gerrit Grunwald about the Disco API https://foojay.io/today/author/gerrit-grunwald/ Disco API Blog: https://foojay.io/today/disco-api-helping-you-to-find-any-openjdk-distribution/ Disco API Swagger UI: https://api.foojay.io/swagger-ui 24:38 Simon Ritter https://foojay.io/today/author/simonritter 25:10 Marit van Dijk https://foojay.io/today/author/marit-van-dijk 25:47 Hanno Embregts https://foojay.io/today/author/hanno-embregts 26:42 Bazlur Rahman https://foojay.io/today/author/bazlur-rahman 29:10 Artur Skowroński JVM weekly: https://www.linkedin.com/newsletters/jvm-weekly-7097859802881540096 30:22 Conclusion and looking forward to 30 years of Java with James Gosling

31 min
12 ABR

All Things Java at VoxxedDays Amsterdam (#69)

On April 3rd, the first VoxxedDays event in Amsterdam took place. VoxxedDays are tech events organized by local community groups, with support from the Devoxx team. Geertjan Wielenga brought along a camera and microphone and spoke with many of the attendees. This is the first Foojay podcast ever to feature more than 20 guests! Geertjan asked the same two questions to many of conference visitors: “Tell us who you are and what excites you about the technology landscape?” and “What are two tips or insights you’d like to share?”As you might expect, there's a lot of talk about AI and machine learning, but you’ll also hear about new Java features, profiling, open source, security, code reviews, and much more!00:00 Introduction00:33 Ko Turk: VoxxedDays organizationhttps://www.linkedin.com/in/ko-turk-b271b929/ 01:34 Stephan Janssen: F ounder of Devoxx and VoxxedDayshttps://www.linkedin.com/in/stephanjanssen/ 05:27 Lutske de Leeuw: Important new features in Javahttps://www.linkedin.com/in/lutske/ 06:25 Johannes Bechberger: Profiling and instrumentationhttps://www.linkedin.com/in/johannes-bechberger/ 07:03 Christian Tzolov: Spring AI and MCPhttps://www.linkedin.com/in/tzolov/ 09:01 Tom Cools: AI, machine learning, mathematical optimization, and all the opportunities in this field.https://www.linkedin.com/in/tom-cools-17547548/ 11:30 Eric-Wubbo Lameijer: Automated code analysishttps://www.linkedin.com/in/eric-wubbo-lameijer-64303013/ 13:02 Abraham van de Vyver: GenAI, impact on job and opensource projectshttps://www.linkedin.com/in/a5r/ 15:01 Soham Dasgupta: Combining cloud native applications with AI, GenAIhttps://www.linkedin.com/in/dasguptasoham/ 17:05 Josh Long: AI and its impact, MCP, role of junior developershttps://www.linkedin.com/in/joshlong/ 21:33 Susanne Pieterse: RAG and AI, vector search, VoxxedDays community reviewerhttps://www.linkedin.com/in/susannepieterse/ 23:22 Brian Vermeer: Security on using LLMs and what can possibly go wrong?https://www.linkedin.com/in/brianvermeer/ 24:47 Anton de Ruiter: Migrating the Dutch tax system to microservices and containershttps://www.linkedin.com/in/antonderuiter/ 25:32 Rafael de Lio: Redis, real-time databaseshttps://www.linkedin.com/in/raphaeldelio/ 27:55 Jonathan Stronkhorst: Spring AIhttps://www.linkedin.com/in/jonathan-stronkhorst/ 28:29 Jos Roseboom: Encapsulation with Spring Modulithhttps://www.linkedin.com/in/jos-roseboom-75508b11/ 29:18 Soroosh Khodami: Software supply chain securityhttps://www.linkedin.com/in/sorooshkhodami/ 30:33 Artem Makarov: Applied AI, real use cases after the hypehttps://www.linkedin.com/in/artemy/ 31:46 Kaya Weers: Learning thanks to the communityhttps://www.linkedin.com/in/kayaweers/ 35:27 Eddy Vos: Devoxx4Kids Foundation, volunteers learning children to codehttps://www.linkedin.com/in/eddyvos/ 38:00 Paco van Beckhoven: Improving the code review and pull request process with errorprone and openrewritehttps://www.linkedin.com/in/pacovanbeckhoven/ 39:30 Hanno Embregts: Using AI and GenAI in a good wayhttps://www.linkedin.com/in/hannotify/ 41:14 Martijn van Iersel: Learning through gamification, internationalization of code, unicodehttps://www.linkedin.com/in/martijn-van-iersel-2314464/ 43:54 Charl Fasching: Impact of AI on Dev and DevOpshttps://www.linkedin.com/in/charl-fasching-77843288/ 47:43 Joris Kuipers: Experimenting with AI to integrate in applications, learning at conferenceshttps://www.linkedin.com/in/jkuipers/ 48:48 Conclusion

49 min
15 MAR

Welcome to OpenJDK (Java) 24 (#68)

We serve you a podcast about the new Java version every six months.Our regular guest, Simon Ritter, Deputy CTO of Azul, is known on social media as "speakjava." He is part of the OpenJDK vulnerability group, JCP executive committee, and expert group for the Java SE specification request so that he can share a lot of inside information with us. In this episode, we are joined by Hanno Embregts, a Java Developer by day and musician by night. He publishes a post on Foojay with all the details of every new Java release and prepared a long description of all the new features included in Java 24. Let's see what this new release brings us...Guests Simon Ritter https://www.linkedin.com/in/siritter/ https://bsky.app/profile/speakjava.bsky.social Hanno Embregts https://www.linkedin.com/in/hannotify/ https://bsky.app/profile/hanno.codes Content00:00 Introduction of the topic and guests00:58 Why 24 JEPs in release 24?02:16 Overview of the changes in Java 2403:37 The changes in Hotspot and GC JEP 404: Generational Shenandoah (Experimental) https://openjdk.org/jeps/404 JEP 450: Compact Object Headers (Experimental) https://openjdk.org/jeps/450 JEP 475: Late Barrier Expansion for G1 https://openjdk.org/jeps/475 04:46 JEP 483: Ahead-of-Time Class Loading & Linking https://openjdk.org/jeps/483 07:30 JEP 491: Synchronize Virtual Threads without Pinning https://openjdk.org/jeps/491 10:27 Security JEPs and Quantum resistance JEP 478: Key Derivation Function API (Preview) https://openjdk.org/jeps/478 JEP 496: Quantum-Resistant Module-Lattice-Based Key Encapsulation Mechanism https://openjdk.org/jeps/496 JEP 497: Quantum-Resistant Module-Lattice-Based Digital Signature Algorithm https://openjdk.org/jeps/497 13:00 Tools JEP 493: Linking Run-Time Images without JMODs https://openjdk.org/jeps/493 16:47 Repreviews and finalizations JEP 489: Vector API (Ninth Incubator) https://openjdk.org/jeps/489 18:27 JEP 484: Class-File API https://openjdk.org/jeps/484 19:13 JEP 485: Stream Gatherers https://openjdk.org/jeps/485 21:22 JEP 487: Scoped Values (Fourth Preview) https://openjdk.org/jeps/487 22:15 JEP 488: Primitive Types in Patterns, instanceof, and switch (Second Preview) https://openjdk.org/jeps/488 22:30 How JEPs get finalized and included23:44 JEP 492: Flexible Constructor Bodies (Third Preview) https://openjdk.org/jeps/492 24:09 JEP 494: Module Import Declarations (Second Preview) https://openjdk.org/jeps/494 25:07 JEP 495: Simple Source Files and Instance Main Methods (Fourth Preview) https://openjdk.org/jeps/495 29:24 JEP 499: Structured Concurrency (Fourth Preview) https://openjdk.org/jeps/499 34:04 Deprecations & Restrictions34:46 JEP 472: Prepare to Restrict the Use of JNI https://openjdk.org/jeps/472 37:15 JEP 486: Permanently Disable the Security Manager https://openjdk.org/jeps/486 38:53 JEP 490: ZGC: Remove the Non-Generational Mode https://openjdk.org/jeps/490 Trash Talk - Exploring the JVM memory management by Gerrit Grunwald https://www.youtube.com/watch?v=Jh79ojcror0 42:09 JEP 498: Warn upon Use of Memory-Access Methods in sun.misc.Unsafe https://openjdk.org/jeps/498 45:43 Removal of 32-bit support JEP 479: Remove the Windows 32-bit x86 Port https://openjdk.org/jeps/479 JEP 501: Deprecate the 32-bit x86 Port for Removal https://openjdk.org/jeps/501 47:37 Should we use Java 24 in production?51:09 Looking forward to the next LTS in September54:14 Conclusion

55 min

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Foojay.io, the Friends Of OpenJDK!

JCON Report, Part 4 - Tips and Tricks for Java Devs (#75)

JCON Report, Part 3 - AI, ChatGPT, LLM, ML, RAG, MCP, GenAI, and more! (#74)

JCON Report, Part 2 – Evolutions in the Java Language and Runtime (#73)

JCON Report, Part 1 - Grow your career, public speaking, 30 years of Java, greener coding,... (#72)

Celebrating 30 Years of Java with James Gosling (#71)

Celebrating 5 Years of Foojay! (#70)

All Things Java at VoxxedDays Amsterdam (#69)

Welcome to OpenJDK (Java) 24 (#68)

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Foojay.io, the Friends Of OpenJDK!

Episodios

JCON Report, Part 4 - Tips and Tricks for Java Devs (#75)

JCON Report, Part 3 - AI, ChatGPT, LLM, ML, RAG, MCP, GenAI, and more! (#74)

JCON Report, Part 2 – Evolutions in the Java Language and Runtime (#73)

JCON Report, Part 1 - Grow your career, public speaking, 30 years of Java, greener coding,... (#72)

Celebrating 30 Years of Java with James Gosling (#71)

Celebrating 5 Years of Foojay! (#70)

All Things Java at VoxxedDays Amsterdam (#69)

Welcome to OpenJDK (Java) 24 (#68)

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