/usr/share/maven-repo/org/antlr/antlr-runtime/3.5.2/antlr-runtime-3.5.2.jar is in libantlr3-runtime-java 3.5.2-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/antlr/antlr-runtime/3.5.2/../../../../../java/antlr3-runtime.jar