I have the same issue with AWS Corretto 11. Our 3rd party dependency tool cannot identify these libraries. Unfortunately, libs are not listed in legal files in JDK.

Luckily, these libraries are not maintained so I deduced that OpenJDK can use the latest versions. AWS Corretto is based on OpenJDK.

• sjsxp can be 1.0.2 (last release 2012)
• mx4j can be 3.0.2 (last release 2006)