Monthly Java/JVM Meetup - October 2026

Agenda: 17:00 - Doors Open for Drinks and Snacks and Mingle 18:00 - Introduction 18:15 - Speaker 1: Lesedi Jonas - Threads 101 19:00 - Small break 19:15 - Speaker 2: Batandwa Mgutsi - Programming without syntax: The compiler is an LLM 20:00 - 20:30 - More mingling and close. Venue: Microsoft SA, Bryanston, Sandton We ask that you do not RSVP Yes if you are not sure you will be able to attend. We would not want somebody to loose out on the opportunity seeing that seats are limited. Details: Speaker: Lesedi Jonas Talk: Threads 101. Abstract: Explore how concurrency in Java evolved from early Thread and Runnable basics to java.util.concurrent and modern virtual threads. Compare the key ways to implement execution from raw threads and ExecutorService pools to asynchronous futures and lightweight virtual threads. Walk away with clear guidelines and practical trade-offs so you can choose the right threading model for your workload. Speaker Lesedi Jonas is a software developer at BBD. Social media links: LinkedIn: https://www.linkedin.com/in/lesedi-jonas-961803212/ GitHub: https://github.com/lsd12-hub ----- Details: Speaker: Batandwa Mgutsi Talk: Programming without syntax: The compiler is an LLM Abstract: For decades, programming has meant translating ideas into syntax. But what happens when the compiler can understand intent directly? This talk explores an experimental framework where developers write .prompt files instead of .java files, allowing software to be built from natural language descriptions rather than hand-written code. Through live demos, I'll show how the system works, the engineering challenges involved in making it reliable, and what this shift could mean for the future of software development. Speaker Batandwa Mgutsi is a Software Engineer at BBD, where he builds enterprise software for the financial services industry using technologies including Java, Spring Boot, .NET, Azure and Kubernetes. He is also a developer community organiser and co-organiser of JoziJUG, JoziJs, and GDG Johannesburg passionate about sharing practical engineering knowledge. His interests span software engineering, AI, developer tooling and building technology with clear intent and purpose. Social media links: LinkedIn: https://www.linkedin.com/in/batandwamgutsi GitHub: https://github.com/bats64mgutsi \\ Social media links: Twitter/X: @jozijug Facebook: https://www.facebook.com/groups/jozijug/ LinkedIn: https://www.linkedin.com/company/11526975/ The Jozi Java User Group (Jozi-JUG) is dedicated to a harassment-free experience for everyone. Our anti-harassment policy can be found here (https://github.com/Jozi-JUG/constitution/blob/master/antiharassmentpolicy.txt)