/usr/share/eclipse/dropins/jdt/plugins/org.junit_3.8.2.dist/junit.jar is in eclipse-jdt 3.8.1-10.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/eclipse/dropins/jdt/plugins/org.junit_3.8.2.dist/../../../../../java/junit.jar