Which Spring Boot and Java versions are supported? #25

ddsha441981 · 2026-07-29T09:02:08Z

ddsha441981
Jul 29, 2026
Maintainer

We are still on Spring Boot 2.7 with Java 17 in some services and Boot 4.0 in others. Will WireDoctor work across this range?

Answered by ddsha441981

Yes — that exact range is CI-tested. The full test matrix (compat.yml) runs green on:

Spring Boot	Java 17	Java 21	Java 25
2.7.x	✅	✅	✅
3.3.x	✅	✅	✅
3.5.x	✅	✅	✅
4.0.x	✅	✅	✅

Important caveats:

Java floor is 17 — WireDoctor is compiled for Java 17 bytecode, so Java 8/11 apps can't load it even on Boot 2.7.
Boot floor is 2.4 — startup timings need BufferingApplicationStartup (introduced in 2.4). Lines older than 2.7 may work but aren't CI-verified.
Boot lines between the tested ones (3.0–3.2, 3.4) are expected to work — WireDoctor only uses stable spring-context/spring-boot APIs — but only the listed lines carry a CI guarantee.
AOT / GraalVM Native Image is NOT supported — trad…

ddsha441981 · 2026-07-29T09:03:17Z

Yes — that exact range is CI-tested. The full test matrix (compat.yml) runs green on:

Spring Boot	Java 17	Java 21	Java 25
2.7.x	✅	✅	✅
3.3.x	✅	✅	✅
3.5.x	✅	✅	✅
4.0.x	✅	✅	✅

Important caveats:

Java floor is 17 — WireDoctor is compiled for Java 17 bytecode, so Java 8/11 apps can't load it even on Boot 2.7.
Boot floor is 2.4 — startup timings need BufferingApplicationStartup (introduced in 2.4). Lines older than 2.7 may work but aren't CI-verified.
Boot lines between the tested ones (3.0–3.2, 3.4) are expected to work — WireDoctor only uses stable spring-context/spring-boot APIs — but only the listed lines carry a CI guarantee.
AOT / GraalVM Native Image is NOT supported — traditional JVM mode only.

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