Duke's Corner

Jim Grisanzio from Oracle Java Developer Relations talks with Carlos Obregón at JavaOne 2026. Carlos is a Java Champion and also the founder of Bogota's Java User Group, Bogotá JVM. Carlos has been running monthly meetups for over a decade, and he and his colleagues have built one of the most active developer communities in Latin America. In his session at JavaOne — Teaching Java as a First Langua...

Jim Grisanzio from Oracle Java Developer Relations talks with Cristian Schuszter at JavaOne 2026. Cristian is a PhD in systems engineering and a Tech Lead at CERN in Geneva. He's been at CERN for 8 years, but he's been coding since he was eight years old. He loves working with and contributing to the Java community and other Open Source projects. This was Cristian's first JavaOne, and his session,...

Jim Grisanzio from Oracle Java Developer Relations talks with Martin Chalupa from Netflix at JavaOne 2026. Martin is a software developer with about eight years at Netflix and about twenty years working with Java. At Netflix, Martin works on the JVM ecosystem team, which grew from the build tooling team and now also handles broader JVM work such as tuning, garbage collection, and upgrading. In his...

Jim Grisanzio from Oracle Java Developer Relations talks with Luiz Real, an engineer and college professor from the SouJava Community in Sao Paulo, Brazil. Luiz came to JavaOne 2026 for the first time this year to build relationships, catch up on the latest technical features in Java, and to mix with the Java Champions. He says building those connections is something you can only do in person at a...

Jim Grisanzio from Oracle Java Developer Relations talks with Henri Tremblay at JavaOne 2026. Henri is a Java Champion, Montreal JUG leader, and EasyMock lead developer from Montreal, Canada. Henri's session at JavaOne covered the Java Memory Model, which is a topic he believes every Java developer should understand well. He's been to six JavaOne's and had warm words for the conference, which repr...

Jim Grisanzio from Oracle Java Developer Relations talks with Bruno Borges from Microsoft at JavaOne 2026. Bruno works on GitHub's Core AI developer relations team. The conversation covers the future of Java in a world of AI, the value of learning core computer science fundamentals in school, the shifting role for software developers from just writing code to architecting higher level systems, the...

Bob Treacy started his career as a union steward on the factory floor at GE Aircraft Engines. After earning a BS and MS in Computer Science from Boston University while working and raising a family at the same time, he jumped to software, never looked back, and remains at the cutting edge with Java and AI. Now Principal Software Architect and Data Engineer at Harvard University, he has been writin...

This is the third in a short series of speaker profiles for JavaOne 2026 in Redwood Shores, California, March 17-19. Get early bird pricing until February 9, and for a limited time, take advantage of a $100 discount by using this code at checkout: J12026IJN100. Register . Sessions . In this conversation, Jim Grisanzio from Java Developer Relations talks with Paul Bakker, an engineer and Java archi...

This is the second in a short series of speaker profiles for JavaOne 2026 in Redwood Shores, California, March 17-19. Get early bird pricing until February 9, and for a limited time, take advantage of a $100 discount by using this code at checkout: J12026IJN100. JavaOne : Register  | Sessions In this conversation, Jim Grisanzio from Java Developer Relations talks with developer advocates Marit van...

This is the first in a short series of speaker profiles for JavaOne 2026 in Redwood Shores, California, March 17-19. Get early bird pricing until February 9, and for a limited time, take advantage of a $50 discount by using this code at checkout: J12026DCP.  Register . Sessions . In this conversation, Jim Grisanzio from Java Developer Relations talks with Jeanne Boyarsky, a Java developer, an auth...

Chris Hermansen: Don't be Afraid to Create Summary Jim Grisanzio from Java Developer Relations talks with Chris Hermansen, a Java developer, consultant, and data analyst from Canada. Chris discovered Java in the 1990s and was drawn to its free accessibility and object-oriented design. He particularly appreciated Java's straightforward single inheritance model over C++'s complexity. But Chris's pat...

Jim Grisanzio from Java Developer Relations talks with Barry Burd, a computer science teacher, an author, and the co-leader for two Java User Groups (JUGs). Barry is based in New Jersey and he's taught at the undergraduate level for decades. His journey with Java began in 2004 when he attended small user group meetings of just five or six people. Those gatherings, once part of the Amateur Computer...

Jim Grisanzio from Oracle Java Developer Relations talks with Mattias Karlsson, Java Champion and prominent developer in the Java community who was also honored with the Java Community Lifetime Achievement recognition at Jfokus in February 2024.  "I was shocked and honored — very humbled!" Mattias said about being recognized for his lifetime of achievements in the Java community by Sharat Chander...

Jim Grisanzio from Java Developer Relations talks with Venkat Subramaniam who was recognized with the Java Community Lifetime Achievement honors by Oracle's Sharat Chander at Devoxx UK in May 2024. Venkat is a Java Champion, author, speaker, founder of Agile Developer, co-founder of the dev2next conference, and teacher at the University of Houston. In this conversation, which is part of an ongoing...

Jim Grisanzio from Java Developer Relations talks with Bruno Souza, who is a Java Champion, leader of the SouJava User Group in Brazil, and a member of the JCP Executive Committee. Bruno received the first Java Community Lifetime Achievement recognition in October 2022 at JavaOne in Las Vegas. "I was totally surprised! I was jumping up and down! I was so honored! It's an honor to be a member of th...

Jim Grisanzio from Java Developer Relations talks with Trisha Gee, an author, a Java Champion, and a Developer Advocate at Gradle. In February 2025 at Jfokus in Stockholm Trisha received the Java Community Lifetime Achievement honor from Sharat Chander from Oracle Java Developer Relations. Trisha has been a Java developer for 25 years, and since 2011 she's been actively blogging, presenting techni...

Jim Grisanzio from Java Developer Relations talks with Cay Horstmann, a professor, author, and Java Champion. In April in Cologne, Germany at JCON Cay received the Java Community Lifetime Achievement recognition from Sharat Chander on the Oracle Java Developer Relations Team. This conversation covers the evolution of Java, the constant polishing of the library, the upcoming Java 25 release, the si...

Jim Grisanzio from Java Developer Relations talks with Heinz Kabutz from the Island of Crete in Greece. Heinz has a PhD in Computer Science, publishes the The JavaSpecialists' Newsletter, and runs the JCrete Unconference. Heinz is also a Java Champion and a teacher, and he cares deeply about the technology and the community. Recently, Heinz was recognized for his Lifetime Achievement by Sharat Cha...

Jim Grisanzio from Java Developer Relations talks with Nate Schutta, an author, a teacher, a software architect, and Java Champion. Nate lives in the United States and teaches computer science to university students. He loves teaching and he loves learning, and he specializes in exploring the big picture of complicated systems in his career as a software architect. The conversation covers the Java...

Jim Grisanzio from Java Developer Relations talks with Francisco Contreras, who is a Java developer and a co-organizer at Nicaragua JUG. Francisco has been a Java developer for over 15 years and he runs his own consulting business with customers around the world. He's passionate about Java the technology and also Java the community. "When I learned Java at university I felt like I could do anythin...

Jim Grisanzio from Java Developer Relations talks with Ivar Grimstad, who is a Java Champion, a JCP Executive Committee Member, and a Jakarta EE Developer Advocate. Ivar is based in Sweden but travels to over 40 events a year talking about Java and Open Source with thousands of developers. He feels passionately about contributing to Java projects as the best way for young developers to learn Java...

The Duke's Corner Java Podcast contributed an 11 minute segment to the Community Keynote at JavaOne 2025 in California in March. Jim Grisanzio from Oracle Java Developer Relations hosted the program with special guests Cay Horstmann, Marit van Dijk, and Lize Raes. The panel covered the latest bits in Java, how to contribute to the community, and the best bits from JavaOne. Everyone had a great tim...

Jim Grisanzio from Java Developer Relations talks with Tom Cools, an engineer from Belgium, a conference speaker, a Java Champion, and the leader of the Belgian Java User Group. "I make it my mission to spread Java all over Belgium," says Tom as he describes how he runs the BeJUG as an Open Source project that takes contributions from the community. Here in this conversation Tom also talks about h...

Jim Grisanzio from Java Developer Relations talks with François Martin, a full stack developer from Switzerland who loves teaching Java to students and contributing to the Java community. This conversation ranges from teaching students Java from scratch, the value of test driven development, the lessons from NASA's Apollo project, the benefits — and surprises — of contributing to open source proje...

Jim Grisanzio from Java Developer Relations talks with Marit van Dijk, a Java Champion and also a Java Developer Advocate at JetBrains. Marit will present on developer productivity with IntelliJ IDEA at JavaOne March 18-20 in California.   Go to javaone.com and register and we'll see you there!  Marit van Dijk https://x.com/MaritvanDijk77 JavaOne 2025 https://javaone.com Duke's Corner https://duke...