/usr/share/maven-repo/javax/servlet/javax.servlet-api/3.1/javax.servlet-api-3.1.jar is in libservlet3.1-java 8.0.32-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/javax/servlet/javax.servlet-api/3.1/../../../../../java/servlet-api-3.1.jar