Thalles Vieira

A pragmatic look at what actually changed, what matters in practice, and what to do if your team is still running Java 11 in production today. Introduction Migrating Java versions is one of those discussions that always comes back to the table. Someone in the team brings up Java 21, the tech lead mentions Virtual Threads, an architect points out that "if it isn't broken, don't touch it", and the meeting ends with no decision. Three months later, the conversation starts again