This is a request to add a new diagnostic command to the jcmd tool that can list the "jar files" loaded and used by a running process. There is an existing command to see the list of loaded classes but none to get the list of loaded jar files.

On Linux, there is an alternate way to get the list of jar files by using "lsof":

% lsof -p 1022226 | grep jar
java 1022226 pobajaj mem REG 8,1 67062114 38523537 /home/pobajaj/jdks/jdk1.8.0_281/jre/lib/rt.jar
java 1022226 pobajaj 3r REG 8,1 67062114 38523537 /home/pobajaj/jdks/jdk1.8.0_281/jre/lib/rt.jar

But this is not a reliable and platform independent way.