Don’t know why I didn’t know this…but I didn’t. I think I read it but didn’t understand it. Maybe due to my lack of understanding Java.
If you download the zip file linked from the main github page (bottom of that page)…it’s ready to run, you don’t need to build it. You don’t even need to install Java. Click on the link, then scroll down to the zip file. After you unzip it, it won’t have a ./build file in it’s root directory, and it will be much smaller than the one you build!
I’ve been git cloning it then building it. Which in itself has been interesting to watch. The zip is less than 10MB. Unzipped…over 60MB.
I read somewhere…The distribution does not include Java source – this is not required to use z390, and the package contains a compiled JAR file and scripts for use.