Duke's Corner

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 @jimgris

Chris Hermansen: Don't be Afraid to Create 12/16/2025

Chris Hermansen: Don't be Afraid to Create 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 shout out to the garbage collection people that do that amazing stuff," acknowledging the often-invisible work that performance engineers at Oracle do to make Java faster and more efficient for developers. Throughout the discussion, Chris talked at length about developers, the user community, and the technology. He has a nice habit of mixing the issues seamlessly. Check out this gem below where he beautifully concluded that Java is far more than a language because it's really a movement. "The user community is, generally speaking, pretty satisfied with [Java]. And it's a broad enough user community. It's got people like me. It's got people still doing desktop Java. It's got people using it on servers. And there's a whole tool ecosystem out there. Personally, I prefer working right at the command line. I always have. But the application that I mentioned we built using NetBeans, which came out of Sun originally. And it's quite a nice IDE. I don't think it's the most popular one. It doesn't really matter. It's still a very nice one. And it gave us a big part of that long-term support. And lately, I find myself using other JVM languages. So it's not just Java. It's the JVM that underpins it, that has permitted a flowering of alternative approaches to things that, generally speaking, work very well together with Java. So, it's a pretty cool thing. It's a movement. It's not just a programming language." Consulting, Professionalism, and Cultural Differences On consulting and professionalism, Chris stresses the importance of contributing to the team to best serve customers. He cautions against embracing some Silicon Valley software mantras — such as "fail early, fail often" — when applied outside their intended prototyping context. "And I know failure is a thing that people talk about in software development. Fail early, fail often. But you don't hear consultants saying fail often. It's not a good look for a consulting company," he says. Instead, Chris focuses on engineering being technically excellent and using open communications to help ensure the team's success. "In a consulting organization, you really have to be a team player," he says. He clarifies that getting prototypes out for feedback certainly has merit: "Get something out there and [letting] people throw rocks at it and [recording] what they say [that's] false and recognize that, okay, you failed, but at least you moved the ball down the field. I'm a huge fan of prototyping." Throughout the years in his career Chris also observed cultural differences in problem-solving approaches around the world. He says that some cultures prefer abstract discussion while others focus on concrete data. "Never mind all these grand theories. Let's actually look what we have. And really, you know, like don't go down that rabbit hole either. Look at what you have and base things on the reality that you know about," he advises. He warns against getting lost in theoretical discussions: "Resist the old, you know, the medieval concept of how many angels on the head of a pin kind of thing. Just don't go there." The Human Side of Technology Work Chris emphasizes that technology work remains fundamentally human. Near the end of the conversation, Chris focuses what he sees as most important: "I would just emphasize maybe that we're human beings here and we're driven by our human desires and wills. And as you rightly pointed out, cultural things roll into that," he says. Despite all the technical discussion about tools, languages, methods, and preferences, the work is ultimately done by human beings with human needs and motivations. Cultural factors, listening skills, and collaborative team approaches matter as much as technical competence. "Remember, you spend a long time of your life at your job. And so, it's important that that contributes to your humanity and that your humanity contributes back." He encourages developers to remember their humanity throughout their careers, to contribute meaningfully to their teams and communities, and to avoid becoming caricatures of the latest corporate culture. "It's really important to remember that you're part of a group of human beings here. You don't want to be a Dilbert comic," he says, using the comic strip as a reference point for the dehumanized corporate worker trapped in absurd bureaucracy. On the importance of listening, Chris shares wisdom from a sign he saw years ago: "If God had intended man to speak more than he listened, he would have given him two mouths and one ear. Listen more, say less." When discussing custom solutions versus off-the-shelf tools, and after discussing how being familiar with algorithms allows you to blend approaches for better solutions, Chris delivers what became the title of the episode: "Basically, you know, if there's not something off the shelf that — Don't be afraid to create!” This is a message that Chris encourages all developers to embrace because they have such advanced skills right at their fingertips. Advice for Students: Learning Then and Now That creation framework extends to Chris's advice to students learning software development. Students today face different challenges than he did decades ago. Chris compared his learning experience years ago with his daughter's more recent computer science education. Modern students learn differently through sophisticated IDEs that suggest improvements and refactor code automatically, while Chris and his colleagues back in the day learned using only a command line, a text editor, and a compiler. "The difference is really striking between the two because the only tool we had was the command line, the text editor, and the compiler," he says. Modern IDEs provide capabilities like automatic refactoring and code suggestions that fundamentally change what students focus on during their education. He notes that learning with modern tools creates almost a different world than learning in his era: "And so it was really almost learning a different discipline for her than it was for me." He advises students to try multiple approaches to problem-solving and to explore all their options to apply their technical skills in many diverse fields. "And I think if there's a lesson to be taken from that, sometimes it might be fun once you've learned how to do something in the IDEs to try and do it the old way and see what it's like just creating from nothing, you know, and starting out that way. And vice versa, guys like me that always insist on using VI at the command line, we should learn an IDE. It's time." Finally, Chris reflects on the value of learning multiple approaches to solving problems. This goes beyond just technical skills to understanding the problem itself more deeply: "I think learning several different ways to solve a problem ultimately teaches you more about the problem. And learning more about the problem, I think, teaches you a bit about yourself and how you go about solving things and your value to your organization." During the entire conversation on technology, Chris consistently wove in the human element. We are people, after all. We’re just using digital tools to create. Duke’s Corner Java Podcast Jim Grisanzio, Host, Duke’s Corner | /episode/index/show/oraclegroundbreakers/id/39426960

Barry Burd: Teaching Java as an Art Form 12/02/2025

Barry Burd: Teaching Java as an Art Form 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/ /episode/index/show/oraclegroundbreakers/id/39235530

Mattias Karlsson: I think it's Brilliant 09/15/2025

Venkat Subramaniam: I Teach Because I Learn 09/05/2025

Bruno Souza: My Greatest Pride is the Community 08/31/2025

Bruno Souza: My Greatest Pride is the Community 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 that group." he said. Bruno Souza is known as the "JavaMan" from Brazil and that nickname started back at Sun when Java was announced and Bruno started evangelizing the technology. Bruno's message to the community was "Open Standards and Open Source" as he began his community building efforts around Java. He continually brought to Brazil FOSS and Standards experts for community discussions, and he advocated for a standards-based Open Source implementation of Java that would pass the TCK. Bruno left Sun and then returned, and he also joined the JCP (Java Community Process). Now all these years later we have OpenJDK, and open JCP, and hundreds of independent JUGs that can participate in community building and also Java development. "Maybe my greatest pride, I think, is the idea of the Java User Groups community," Bruno says. "We have OpenJDK for development and the JCP for standards, but for me the real Java community is the Java User Groups! These are all volunteers who meet and help others participate and learn." Bruno in recent years has been talking a lot about building reputation and career by embracing the open-source lifestyle — writing code in Java, contributing to Open Source, and helping build the community itself. Since our work lives in public mailing lists and open-source code repositories, we earn credibility by being visible, contributing, engaging the community, and helping others get involve as well, Bruno says. Bruno advises that career is a long-term project: "The more you work on it, the more you grow, the more results you have. So, the sooner you start the better. This is not a sprint! This takes time." Getting back to Java itself, Bruno, like most Java developers, prefers the 6-month release cadence over the older system of multi-year development and release cycles. There is a constant flow of technology now which allows for more interactions between the Oracle engineers and engineers in the community. "Everything you see today in Java is possible because of the 6-month release process. I just loved it when the guys did that! I think it's amazing! The fact that we now have two releases per year changed Java. I think we’re positioning Java to be even stronger in the years to come. I’m very excited about the whole thing," Bruno says. Throughout this conversation Bruno provides a wonderful history of Java since he’s been involved from the very beginning! "People don’t remember that Java was a community from the very beginning!" Bruno says. “We were able to look at the source code from the very beginning and that allowed us to build the community from the very beginning with lots of other companies joining." And then the JCP was created to allow Sun and the community to discuss the standardization of Java. And then OpenJDK was a huge step because now Java would be everywhere with Oracle leading and building the community. "Java is more participative today under Oracle than during the Sun times." "Java + Open Source + Community: That’s what grows our career. That's what grows Java too!" — Bruno Souza Bruno Souza Duke's Corner Java Podcast Jim Grisanzio /episode/index/show/oraclegroundbreakers/id/38035080

Trisha Gee: It’s all about Relationships and People 08/18/2025

Trisha Gee: It’s all about Relationships and People 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 technical sessions at conferences, and evangelizing Java globally. Recently, Trisha has moved from a traditional developer advocate role to more of a facilitator of developer advocacy internally at her company as well as externally. She works with engineering teams, marketing, teams, and sales teams to ensure the voice of the developer resonates throughout the organization and the community. Trisha is always evolving, she’s constantly growing. In this conversation we talk about the JVM, the six month Java release cycle, writing code, the unique features that make Java special as a technology and as a community, Generative AI, design patterns, understanding requirements, asking questions, problem solving, edge cases, documentation, testing, open source, standards, advice for students, and teaching her 9-year old how to code in Java. Trisha is fascinated with the entire development life cycle of software projects and especially the skills developers need now for working with AI. “It feels like a very personal thing from him … he’s such a huge powerhouse in the community. Obviously, he cares about the technology, but he understands that the technology isn’t enough. It is about individuals stepping up but not just doing stuff for themselves but doing stuff to enable other people, to empower other people. It’s the community that makes it a great place to be, and Shar is such a huge champion of that. He makes you feel really appreciated for making the effort to help others and to be involved in the community.” — Trisha Gee commenting about receiving the Java Community Lifetime Achievement recognition from Sharat Chander at Oracle. Trisha Gee Duke's Corner Java Podcast Jim Grisanzio /episode/index/show/oraclegroundbreakers/id/37861140