/usr/share/maven-repo/org/kohsuke/trilead-putty-extension/debian/trilead-putty-extension-debian.jar is in libtrilead-putty-extension-java 1.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/kohsuke/trilead-putty-extension/debian/../../../../../java/trilead-putty-extension.jar