macos – Can a MacBook 12 inch (2017) run OSX Mavericks?

No. Macs can only run the same-year OS (in your case, High Sierra or Sierra, depending on when then model was released) or newer. Mavericks was released in 2013.

It’s probably best if you find a newer version of the app, (i.e. one that doesn’t use Apple Java and/or can use standard Java), or if you have the ability to, recompile the app (to use modern Java. Unless your 2017 MacBook is running Catalina or newer, you can still use 32-bit apps/programs).