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.