AspectJ 1.9.23 has been released with support for JDK 23.

Comment From: sbrannen

To test AspectJ 1.9.23, I ran full builds on Java 21 and Java 23.

Additionally, I ran a build on Java 23 with the source and target compatibility for both compileAspectj and compileTestAspectj in spring-aspects.gradle set to 23, and everything passed.

So, hopefully that indicates proper support for Java 23 with AspectJ 1.9.23.