Spring Boot 2.4 + OpenJDK 9 Compatibility

Why?

Why is Spring Boot 2.4 compatible with OpenJDK 9?

Requirement: OpenJDK >=8.0.0
Selected version: OpenJDK 9
Evaluation: 9.0.4 satisfies >=8.0.0
Conclusion: COMPATIBLE

Evidence

CompatHub reports compatibility from upstream sources rather than making unsupported claims of its own.

Spring Boot Java system requirements
Confidence: HIGH
https://docs.spring.io/spring-boot/docs/2.4.13/reference/html/getting-started.html
Retrieved 1 September 2026
Requirement: >=8.0.0

OpenJDK versions

Compatibility is derived from the project's declared OpenJDK requirement (>=8.0.0); it does not mean every version combination has been independently tested.

8✓
9✓
10✓
11✓
12✓
13✓
14✓
15✓
16✓
17✓
18✓
19✓
20✓
21✓
22✓
23✓
24✓
25✓
26✓

Other OpenJDK versions satisfying this requirement

Spring Boot 2.4 — compatible OpenJDK lines tracked in CompatHub

Other Spring Boot versions

Only lines with relevant compatibility evidence are listed.

Lifecycle context

Lifecycle status is separate from compatibility. An EOL component can still satisfy a documented version requirement.

Compatible, but past end of life

These versions satisfy the documented compatibility requirement, but one or more components are past end of life. OpenJDK 9 lifecycle

Spring Boot 2.4

Status: STANDARD SUPPORT

OpenJDK 9

Status: END OF LIFE
EOL: 20 March 2018

Supported alternatives

OpenJDK lines that satisfy this requirement and are still supported.

OpenJDK 8supported
OpenJDK 11supported
OpenJDK 17supported
OpenJDK 21supported
OpenJDK 25supported
OpenJDK 26supported