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Duke's Corner

Duke's Corner

De : Jim Grisanzio
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 Duke's Corner is a forum for conversations with Java developers. Tune in to connect with the community and learn how developers are innovating with Java around the world. Host: Jim Grisanzio, Oracle Java Developer Relations @jimgris2024 Oracle Corporation Politique et gouvernement
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    • Chris Hermansen: Don't be Afraid to Create

      Chris Hermansen: Don't be Afraid to Create
      Dec 16 2025
      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 path to technology came through mathematics rather than computer science. He identifies streams as Java's most transformative feature for data analysis work and praises how it improved code readability and maintainability. On consulting, Chris cautions against Silicon Valley mantras like "fail often" when applied outside prototyping contexts, and he observes cultural differences in how engineers approach problem-solving with some preferring abstract discussion while others focusing on concrete data. Chris emphasizes that technology work remains fundamentally human and stresses the importance of listening, maintaining humanity in professional life, and avoiding corporate stereotypes. For students, he notes the differences between learning with modern IDEs versus the command line tools of his era when he learned to code, so he advises that new learners to try multiple approaches to deepen their understanding. His core message, which became the episode's title, is simple: "Don't be afraid to create." Discovering Java in the 1990s Chris discovered Java in the mid-1990 when Java was announced while working as a data analyst. "Java came along and it was free to use. It wasn't open source at that point, but it was free to use," he says. "And it really intrigued me because of its object-oriented approach to things, which was something that didn't come with the platform we were working on." Unlike the purchased software products he was using at the time, Java offered a free and accessible alternative that promised serious long-term value. He also appreciated how Java's design avoided the complexities of C++, especially the problems with multiple inheritance. He and a colleague had been discussing moving from Pascal to either C or C++, but his colleague had concerns about C++'s complexity, particularly around multiple inheritance. "The first thing that really jumped out to me was the straightforward single inheritance pathway and the use of interfaces to define contractual relations between code," Chris says. Java's approach to inheritance immediately stood out as cleaner and more maintainable. Features like array bounds checking and interfaces for defining contractual relationships between code further convinced him he was learning something that would age well. "I felt that I was learning something that would wear well over time. I wouldn't turn around and look at what I'd done 10 or 15 or 20 years later and say, yuck, what was I thinking?" After committing to Java and sticking with it through the learning process, he found it repaid his effort many times over. "I liked it and I stuck with it, and I found it paid me back enormously for my investment in learning." Career Path Through Mathematics Chris's path to technology came through math rather than traditional computer science. He actually stumbled into science during the registration process at school in the 1970s and eventually pursued math after deciding against engineering. His career took him through various mathematical applications, including consulting and data analysis positions in forestry. Java's Evolution: Streams and Beyond Regarding Java's evolution, Chris identified streams as the biggest feature improvement for his work. When asked about new features that have been useful in his applications, he immediately identifies streams as transformative. "I mean, streams was the big one. Streams just made a whole difference to the way you would handle data," he says. He contrasts the old approach of writing hundreds of lines of nested for loops with the more elegant stream-based approach: "And so streams has just made that a whole lot easier. And the code is so much more readable and maintainable than the old 500 line do loops that we used to have in Fortran that turned into the 375 line for loops in Java. Anyway, so streams is a big one, a really big one for me. The biggest, I would say." He also valued the introduction of templates (generics) in Java 5 or 6, which represented a significant evolution in the language and allowed applying libraries to custom classes. He praised the Java community for keeping the platform and ecosystem viable, noting that the combination of an active developer community and a satisfied user base creates a virtuous cycle that keeps the platform evolving and improving: "There's enough Java programmers out there, enough people interested in the continuing viability of Java that they keep it going, that they modernize it, that they solve new problems with it, that they make it perform better than it ever has before." He added a "big ...
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      59 min
    • Barry Burd: Teaching Java as an Art Form

      Barry Burd: Teaching Java as an Art Form
      Dec 2 2025

      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 Group of New Jersey, have evolved into the Garden State Java User Group and the New York Java SIG, which now regularly feature Java Champions and prominent speakers from the Java development community. The transformation of the two JUGs on the East Coast of the U.S. reflects the broader growth of the entire Java ecosystem globally.

      Barry's teaching philosophy centers on passion, enthusiasm, and visualization. He works to help students see programming concepts as complete mental pictures rather than just syntax. His classroom approach emphasizes active interactions with as many questions as possible. He tries to create what he calls a party atmosphere rather than a boring traditional lecture setting. He believes strongly in meeting students where they are and encouraging those who love the material while supporting those whose passions may lie elsewhere.

      What distinguishes Barry's perspective is his view of computer science as an art form. He frequently compares elegant code to works of art. He asks students who question the practical value of certain technical concepts whether they would ask the same question in a course about the Mona Lisa. This artistic perspective extends to his appreciation of Java as well. He marvels at the language's thoughtful design, where features fit together as a unified whole rather than random pieces of technology thrown together haphazardly.

      Java's appeal for Barry grows from multiple sources. The language's backward compatibility has been crucial for his work as an author and a teacher. He says that only one program broke across multiple editions of his books over the years. He contrasts this long term stability with other platforms that change frequently and force him to spend time fixing previously working code. The elegance and careful thought behind Java's design resonates deeply with him. He appreciates the early decisions about inheritance and interfaces and the entire evolution of Java from the engineers under the stewardship of architects like Brian Goetz at Oracle.

      Barry says that the six-month release cycle introduced in recent years has injected new life into the Java ecosystem. He sees the platform as self-sustaining now with strong leadership that shows no signs of fading. Living near New York City, he says that financial institutions depend on Java's industrial strength reliability for obvious reasons. The technology serves two audiences well, he says, those who need rock-solid, enterprise-grade systems and those like himself who appreciate the beauty of well-crafted software.

      When asked why Java is so great, Barry says: "I guess the other reason is that it's good for industrial strength programming. People in the area of the world where I live in, close to New York City, in the financial district, rely on it. It's just not breakable the way other platforms are."

      If you ever have a chance to take a software development class from Barry Burd, take it. You'll love it.

      Barry Burd

      https://x.com/allmycode

      https://www.linkedin.com/in/barry-burd/recent-activity/all/

      Jim Grisanzio

      https://x.com/jimgris

      https://grisanzio.com

      Duke's Corner Java Podcast

      https://dukescorner.libsyn.com/site/

      https://grisanzio.com/duke/
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      1 h et 12 min
    • Mattias Karlsson: I think it's Brilliant

      Mattias Karlsson: I think it's Brilliant
      Sep 15 2025

      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 of Oracle's Java Developer Relations Team.

      Mattias, a Stockholm-based engineer and long-time leader of the Stockholm Java User Group, shares his journey with Java, from its early days to its current role in modern tech ecosystems. He also talks about the evolution of Jfokus, a leading annual Java conference he organizes, which has grown from a small Java user group into a major gathering of over 2,000 developers from diverse backgrounds around the world.

      Mattias highlights Java's enduring appeal, driven by its robust JVM, backward compatibility, and vibrant community. He also reflects on the six-month release cycle, calling it "brilliant" for its balance of stability and innovation, and shares insights on mentoring young developers and using AI to stay updated.

      When talking about how students learning programming will inevitably encounter Java due to its widespread use in the industry, Mattias said, "Sooner or later they will end up with Java anyway."

      Finally, the episode underscores the unique culture of the Java community and Jfokus as a conference for its blending of culture, professionalism, and a welcoming atmosphere.

      Mattias Karlsson https://x.com/matkar

      Jim Grisanzio https://x.com/jimgris

      Duke's Corner https://dukescorner.libsyn.com/site

      Podcast Archives, Transcripts, Quotes https://jimgrisanzio.wordpress.com/duke
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      42 min
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