/usr/share/java/stax-api.jar is in libstax-java 1.2.0-3build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../maven-repo/stax/stax-api/1.0.1/stax-api-1.0.1.jar
/usr/share/java/../maven-repo/stax/stax-api/1.0.1/stax-api-1.0.1.jar