Opening orekit-9.3.1.jar on iMacPro

I’m attempting to install Orekit 9.3.1 on an iMacPro running Mac OS X ver. 10.14.3 (Mojave). The version of Java I’m running is up-to-date, Java 8 update 201.

I was attempting to install the binaries from the archive orekit-9.3.1.jar. The problem I’m having is that I can’t open the archive. I’m running JAR ver. 15.0.1 that reports it cannot open the archive.

Any suggestions?

Sam Dupree.

Does expect to have an application with a main or a GUI? Orekit is simply a library, so
it needs to be called from an application, it’s not an application by itself.