Java in 2025 isn't about headline features, it's about how production systems changed under the hood. While release notes focus on individual JEPs, the real story is how the platform, frameworks, and tooling evolved to improve stability, performance, and long-term maintainability. In this video, we look at Java from a production perspective. What does Java 25 LTS mean for teams planning to upgrade? How are memory efficiency, startup time, and observability getting better? Why do changes like Scoped Values and AOT optimizations matter beyond benchmarks? We also cover the broader ecosystem: Spring Boot 4 and Framework 7, AI on the JVM with Spring AI and LangChain4j, Kotlin's growing role in backend systems, and tooling updates that make upgrades easier. Finally, we touch on container hardening and why runtime and supply-chain decisions matter just as much as language features.
Every year, Advent of Code spawns thousands of solutions — but few engineers step back to see the bigger picture. This is a complete walkthrough of all 12 days from 2025, focused on engineering patterns rather than puzzle statements. We cover scalable techniques: interval math without brute force, dynamic programming, graph algorithms (JGraphT), geometry with Java AWT Polygon, and optimization problems that need constraint solvers like ojAlgo. You'll see how Java and Kotlin handle real constraints, how visualizations validate assumptions, and when to reach for libraries instead of writing everything from scratch. If you love puzzles, programming—or both—and maybe want to learn how to solve them on the JVM, this is for you.
Java 26 is the next feature release that brings features for enhanced performance, security, and developer experience. This video discusses the upcoming JDK 26 release, highlighting ten JEPs including JEP 500. JEP 500 focuses on preparing developers for future restrictions on mutating final fields in Java, emphasizing their role in maintaining immutable state. This is crucial for robust programming and understanding the nuances of mutable vs immutable data, especially concerning an immutable class in java. We also touch upon the broader implications for functional programming in Java.


