Spring Office Hours S5E06 - Spring Framework 7 with Juergen Hoeller
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Feb 12, 2026 
Juergen Hoeller, co-founder and long-time lead architect of the Spring Framework, reflects on 25 years shaping the project. He discusses Spring Framework 7’s design choices, Jakarta and JDK 17 moves, early support for new libraries, nullability, Bean Registrar API, AOT and virtual-thread readiness. Short, technical, and forward-looking conversation about keeping Spring flexible at scale.
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Long-Term Hands-On Stewardship
- Juergen Hoeller described co-founding the Spring Framework in early 2003 and working on it for over two decades.
- He emphasized active hands-on work on GitHub, consulting, and conference involvement throughout his career.
Framework Follows Language Progress
- Spring aims to follow new Java language features so application developers can use them immediately.
- The framework focuses on enabling apps to adopt language advances, not necessarily using every feature internally.
Upgrade The JVM Before Everything Else
- Upgrade your JVM first (e.g., JDK 17→25) to gain immediate performance, GC, and security benefits.
- Then plan Spring and Boot upgrades in steps when your organization is ready.