ManageEngine ServiceDesk Plus exploit detection tool

ManageEngine ServiceDesk Plus exploit detection tool

I am seeing errors when I run the exploit detection tool as instructed here: https://www.manageengine.com/products/service-desk/security-response-plan.html.

The system cannot find the path specified.
'java' is not recognized as an internal or external command,
operable program or batch file.

The system cannot find the path specified.
Error: Could not find or load main class FindVulnerableFiles

What am i doing wrong?
Thanks