/usr/share/java/jdimodel.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/java/../eclipse/dropins/jdt/plugins/org.eclipse.jdt.debug_3.7.101.dist/jdimodel.jar
/usr/share/java/../eclipse/dropins/jdt/plugins/org.eclipse.jdt.debug_3.7.101.dist/jdimodel.jar