spring-boot-demo/jakarta-ee-11

jakarta-ee-11

Companion module for the ankurm.com post Jakarta EE 11 for Spring Developers: What Actually Matters.

Reads the Jakarta EE 10 and 11 API jars from Maven Central with javap, reads Spring Boot 4.1.1's own BOM and configuration metadata, and runs one tiny Boot application to ask the embedded Tomcat which Servlet level it implements. No claim in the post comes from prose.

Component	Version
Spring Boot	4.1.1
JDK	25
Maven	3.9

Run

./scripts/run-all.sh   # regenerates everything under output/

Output

File	Shows
output/01-boot-managed-jakarta-apis.txt	Jakarta versions Spring Boot 4.1.1 manages, and four artifacts it does not
output/02-api-diff.txt	Class and member counts, EE 10 vs EE 11, for Servlet, Persistence, Validation, Annotations, Concurrency
output/03-entitymanager-3.2.txt	New EntityManager methods in Persistence 3.2
output/04-data-and-concurrency.txt	Jakarta Data 1.0.2 repository types; @ManagedExecutorDefinition in 3.0.0 vs 3.1.1
output/05-servlet-level.txt	The running application's Servlet level (written by ServletLevelTest)
output/06-spring-data-and-jakarta-data.txt	Spring Data 4.1.1 jars contain no jakarta.data types
output/07-virtual-threads-property.txt	Boot's spring.threads.virtual.enabled property, from shipped metadata