This is part 2 of the interviews recorded on September 19th, 2025, at the first AI4Devs Conference (https://amsterdam.ai4devs.io/) in Amsterdam. In Part 1, we explored many AI-related topics as libraries, security, infrastructure, use cases, and more. In this second part, we'll dive into data science, tools for better AI development, Java in the cloud, and get a behind-the-scenes look at how the conference came together. 

I also asked these guests the same opening question: 'What's your name, and what brings you to this conference?'

00:00 Introduction

00:43 Eileen Kapel
   Data Scientist, building an evaluating a model, taking the enduser into account
   https://www.linkedin.com/in/eileenkapel/ 

06:13 Jonathan Ellis and Ryan Svihla
   Coding with AI with Brokk, AI-native code platform, Java language improvements while keeping stability
   https://www.linkedin.com/in/jbellis/ 
   https://www.linkedin.com/in/ryan-svihla-096752182/ 
   https://brokk.ai/ 
   https://foojay.io/today/indexing-all-of-wikipedia-on-a-laptop/ 

16:24 David Parry
   Qodo, AI developer tools, empowering engineering teams to standardize code quality and move fast with AI
   https://www.linkedin.com/in/daviddryparry/ 
   https://www.qodo.ai/ 

28:46 Alessandro Stefouli-Vozza
   Java in the cloud, Impact of our job on the environment and our future, Green Software Foundation, Dutch Cloud Native meetup and conference
   https://www.linkedin.com/in/alessandrovozza/ 
   https://cloudnative.amsterdam/ 
   https://greensoftware.foundation/ 
   Article by Miro about energy usage: https://foojay.io/today/research-measuring-energy-consumption-in-programming-languages-for-ai-applications/ 

35:02 Sushant Shekhar
   Using Java and AI, Moved from Java to other languages and back, Building your own models versus tweaking
   https://www.linkedin.com/in/sushant-shekhar-2b43ba17/ 

39:09 Arno Koehler
   Organisator, Ai code experiments versus production use, Schiphol POC, Kotlin versus Java versus Scala, The power of the JVM
   https://www.linkedin.com/in/arnokoehler/ 

45:37 Joost Kaan
   About organizing the conference, Python and Java driving AI forward
   https://www.linkedin.com/in/joost-kaan/ 

50:45  Coen de Waal, Samantha Burattini, and Luis San Martin
   Conference sponsor, Use of AI in a banking environment
   https://www.linkedin.com/in/coen-de-waal/ 
   https://www.linkedin.com/in/samantha-burattini/ 

54:51 Nahir Vila
   Student, How the youth is using AI 

57:33 Jonathan Vila
   AI4Devs Organizer, How the conference started and a lookback at the end of the day, How AI can be used when writing articles
   https://www.linkedin.com/in/jonathanvila/ 

01:05:58 Outro

On September 19th, 2025, the first AI4Devs conference (https://amsterdam.ai4devs.io/) took place in Amsterdam. I grabbed my camera and microphone to talk with speakers and attendees about the revolution in AI-powered coding and application development. In this first part, we'll explore Spring libraries, security, infrastructure and scaling, real-world use cases, event streaming, JetBrains tools, and more...

I asked all my guests the same opening question: 'What's your name, and what brings you to this conference?' Let's get started!

00:00 Introduction

00:44 Christian Tzolov and Josh Long
   Spring AI, Spring MCP, Spring Security
   https://www.linkedin.com/in/joshlong/ 
   https://www.linkedin.com/in/tzolov/ 

17:07 Brian Vermeer
   AI and security and the responsibility of the developer
   https://www.linkedin.com/in/brianvermeer/ 

27:57 Camille Nigon and Maarten Vandeperre
   Quarkus, Scaling AI applications, the cost of using LLMs
   https://www.linkedin.com/in/camille-nigon/ 
   https://www.linkedin.com/in/maarten-vandeperre/ 

36:15 Luca Berton
   Infrastructure for AI  applications 
   https://www.linkedin.com/in/lucaberton/ 
   https://www.youtube.com/@BertonLuca 

41:15 Soham Dasgupta
   Real life AI use cases 
   https://www.linkedin.com/in/dasguptasoham/ 
   https://github.com/marketplace?type=models 

48:03 Mary Grygleski
   Event driven agents to handle complex flows
   https://www.linkedin.com/in/mary-grygleski/ 

55:04 Anton Arhipov
   Java and Kotlin at JetBrains, Junie AI
   https://www.linkedin.com/in/antonarhipov/ 

01:06:07 Outro

Episode 78 of the Foojay Podcast. All info, show notes, and links are available at https://foojay.io/today/category/podcast/.

We're excited to present the first episode of the Foojay Podcast's fifth season, marking the release of OpenJDK 25!

For the first time, an OpenJDK release is aligned with the year, and we can welcome release 25 in 2025. As usual in the release podcast, I have my regular guest, Simon Ritter. And in this episode, we are joined by Balkrishna Rawool to talk about all the new features in this new OpenJDK version.

Guests

   Simon Ritter
      https://www.linkedin.com/in/siritter/ 
   Balkrishna Rawool
      https://www.linkedin.com/in/balkrishnarawool/

Content

00:00 Introduction of topic and guests
01:21 How important is release 25 and upgrading your runtimes?
   https://jdk.java.net/25/
06:00 Process of releasing a new OpenJDK version and looking forward to version 26
08:16 What are JEPs and OpenJDK projects
09:20 Project Leyden
   https://openjdk.org/projects/leyden/
   JEP 514: Ahead-of-Time Command-Line Ergonomics
      https://openjdk.org/jeps/514
   JEP 515: Ahead-of-Time Method Profiling
      https://openjdk.org/jeps/515
11:28 Leyden compared to other solutions
16:21 Project Valhalla
   https://openjdk.org/projects/valhalla/
17:06 JEP 519: Compact Object Headers
   https://openjdk.org/jeps/519
17:40 JEP 508: Vector API (Tenth Incubator)
   https://openjdk.org/jeps/508
18:58 Why Vector API is taking a long time to get finalized
21:04 JEP 502: Stable (Immutable) Values
   https://openjdk.org/jeps/502
23:17 Project Loom
   https://openjdk.org/projects/loom/
23:30 JEP 506: Scoped Values
   https://openjdk.org/jeps/506
24:13 JEP 505: Structured Concurrency (Fifth Preview)
   https://openjdk.org/jeps/505
29:22 How Java evolved over 30 years
33:34 Project Amber
   https://openjdk.org/projects/amber/
34:28 JEP 507: Primitive Types in Patterns, instanceof, and switch (Third Preview)
   https://openjdk.org/jeps/507
35:59 JEP 512: Compact Source Files and Instance Main Methods
   https://openjdk.org/jeps/512
37:36 JEP 511: Module Import Declarations
   https://openjdk.org/jeps/511
38:36 JEP 513: Flexible Constructor Bodies
   https://openjdk.org/jeps/513
39:12 What's next in Project Amber
43:25 What you can learn from JEPs, OpenJDK projects, and mailing lists
44:21 JEP 521: Generational Shenandoah
   https://openjdk.org/jeps/521
   Trash Talk by Gerrit Grunwald
      https://www.youtube.com/watch?v=xlwDe-hlSdI
48:16 JEP 510: Key Derivation Function API
   https://openjdk.org/jeps/510
49:30  JEP 470: PEM Encodings of Cryptographic Objects (Preview)
   https://openjdk.org/jeps/470
51:28 About Java Flight Recorder
52:27 JEP 509: JFR CPU-Time Profiling (Experimental)
   https://openjdk.org/jeps/509
52:44 JEP 518: JFR Cooperative Sampling
   https://openjdk.org/jeps/518
53:15 JEP 520: JFR Method Timing & Tracing
   https://openjdk.org/jeps/520
53:38 More about JFR and comparing with GC logs
57:04 JEP 503: Remove the 32-bit x86 Port
   https://openjdk.org/jeps/503
58:54 Looking forward to the following versions
01:00:58 Conclusion

This is the first Foojay podcast in Spanish. It's also the shortest one and the final of season 4 ;-) Jonathan Vila "highjacked" the microphone from Geertjan Wielenga (See episode 76, https://foojay.io/today/foojay-podcast-76-devbcn-report-part-1-learn-from-the-community/) during the DevBcn conference in Barcelona and interviewed a few of the participants for this first Spanish-only edition of the podcast.

Stay tuned and subscribe to the podcast in your favorite app or on YouTube. We're taking a short break and will be back in September with the launch of Java 25!

00:00 Introduction
00:39 Marlene Maldonado, DevBcn Organization
   https://www.linkedin.com/in/marlene-maldonado-de-s%C3%A1 
02:10 Barbara Teruggi, Speaker, Threat Modelling
   https://www.linkedin.com/in/barbara-teruggi/ 
05:04 Santiago Rincon, CFP Member and Attendee
   https://www.linkedin.com/in/santiago-rincon-martinez 
07:56 Marlene Maldonado, Vicente Soriano,  Volunteers
   https://www.linkedin.com/in/visomar 
   https://www.linkedin.com/in/marlene-maldonado-de-s%C3%A1 
10:25 Alvaro Navarro, Speaker, API Design
   https://www.linkedin.com/in/anavarro 
12:37 Vicente Cabanes, Sponsor, Grupo Castilla
   https://www.linkedin.com/in/vicente-cabanes/ 

In early July, the DevBcn conference in Barcelona featured a diverse lineup of speakers, covering topics across multiple technology domains. Geertjan Wielenga took the camera and microphone with him to Spain. Together with Nacho Cougil and Jonathan Vila, two of the organizers, he spoke with many visitors about what they like most in Java, how AI influences their work, and what is important to them in the work they do.

We have more than 20 people who are passionate about the Java community and are eager to share their knowledge with you. 

00:00 Introduction
00:45 Nacho Cougil and Jakub Marchwicki talk about the history of the DevBcn conference.
 https://www.linkedin.com/in/icougil 
 https://www.linkedin.com/in/kubamarchwicki 
02:45 Bert Jan Schrijver is excited about the people in the Java community.
 https://www.linkedin.com/in/bjschrijver/ 
03:06 Ricardo Romero Benítez has a Spanish YouTube challenge about Java and is surprised by the experience of junior developers.
 https://www.linkedin.com/in/ricardo-romero-ben%C3%ADtez-b4a4048a/ 
 https://www.youtube.com/@programando_en_java 
05:43 Christoph Neumann discusses closure and a database created using it.
 https://www.linkedin.com/in/christoph-neumann-6089438/ 
08:03 Victor Rentea gives Java workshops about architecture, performance, maintainable code, etc.
 https://www.linkedin.com/in/victor-rentea-trainer/ 
09:46 Justin Reock measures developer productivity and talks about improving the development experience.
 https://www.linkedin.com/in/justinreock 
17:44 Will Fleury accelerates coding by integrating AI in IDEs and compares different solutions.
 https://www.linkedin.com/in/willfleury 
23:38 Kamesh Sampath handles big amounts of data for AI and other processing.
 https://www.linkedin.com/in/kameshsampath 
26:19 Cedric Clyburn shares his experience with Linux and Kubernetes and is fascinated by open-source AI.
 https://www.linkedin.com/in/cedricclyburn 
28:33 Brian Vermeer helps to make Java applications and AI tools secure.
 https://www.linkedin.com/in/brianvermeer 
31:53 Andrey Sitnik promotes local-first privacy versus the user-data-selling approach.
 https://www.linkedin.com/in/sinik 
35:59 Isabel Garrido Cardenas about cognitive load when working with a lot of microservices and the right way of testing with AI.
 https://www.linkedin.com/in/isabelgarridocardenas 
38:59 Isabella Sohlman is a student, joining the conference to learn how she can grow her career and to meet people from the Java community.
 https://www.linkedin.com/in/isabellasohlman 
40:13 Ruben Cordeiro shares his experience with volunteering at the conference and what he learned from the talks.
 https://www.linkedin.com/in/rubencordeiro 
42:36 Horacio Gonzalez about simple to use cloud services by developers for developers.
 https://www.linkedin.com/in/horaciogonzalez 
44:46 Jonatan Sempere about communication and network APIs to prevent fraud for banking.
 https://www.linkedin.com/in/jsempere95 
47:36 Luis Majano and Cris Escobar talk about BoxLang, a new dynamic JVM language.
 https://www.linkedin.com/in/lmajano 
 https://www.linkedin.com/in/cristobalescobarh  
 https://www.boxlang.io 
59:42 Miguel Xoel García Balsa about observability and the difference with monitoring.
 https://www.linkedin.com/in/miguelxoel 
01:03:32 Silvia Bellmunt shares her experience with the Java community, the DevBcn conference, and data science.
 https://www.linkedin.com/in/silvia-bellmunt-36220aa3 
01:06:15 Rijo Sam talks about framework- agnostic development, using plain Java as much as possible.
 https://www.linkedin.com/in/rijosam19 
01:09:37 Nacho Cougil and Jonathan Vila invite you to the DevBcn conference next year.
 https://www.linkedin.com/in/icougil 
 https://www.linkedin.com/in/jonathanvila 
01:11:33 Outro

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 Introduction
00:34 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

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 Introduction
00:46 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

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 Introduction

00:19 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

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 Introduction
00:37 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

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.

Content

00:00 Introduction
01:06 How did it start 35 years ago?
06:21 Java evolved from device controllers to server applications
10:30 How does it feel that so many people use Java?
12:12 Looking back at the Y2K problem and how it triggered more Java adoption
14:58 Does James regret any decisions in Java?
18:44 Comparing early-day Java development versus now
20:55 About the stability of Java
24:14 JavaFX is one of James' favorites of all time
25:20 Frustrations about Android and iOS versus Java Phones
28:16 How "Write Once, Run Anywhere" was needed for Sun
29:23 Windows versus macOS versus Linux for laptops
31:32 The very first Java web service in 1994 turned into a dark story
33:17 Java in Docker and startup challenges
36:59 Garbage Collectors are amazing in many ways
39:18 Java-haters didn't use recent versions of Java ...
41:51 How Java became much more performant but lost embedded
43:08 Developers must be aware of which and how many libraries they use
47:40 James loves Kotlin, Scala, and Closure
49:42 Ethical responsibility for developers in a challenging job market
54:16 AI influence on jobs
01:00:20 Advice for junior developers
01:02:27 A few of the most remarkable moments in Java history
01:07:52 Why James is not a benevolent dictator for life
01:09:17 How Java will keep evolving
01:12:55 How much is James still involved in Java?
01:13:54 Conclusion