Minimwatch 2, Java and Gnome TopiconsPlus

[nickc]

I'm running Linux Manjaro Gnome release 20.0.3, Gnome v 3.36.4 and for some time the Minimwatch icons for my two instances of MinimServer (both on QNAPs) have not produced menus when clicked on. (They load on boot, are green, but inert.) They used to work fine, so I assume they lost functionality after a system upgrade of some kind. (I've tried replacing TopIconsPlus with TopIconsFix, but to no avail.)

I've now got round to upgrading to MinimServer 2, as that seemed a sensible first step. But I'm having uncertainty about installing Minimwatch 2 because I'm unsure of my Java setup. The terminal gives a result I don't fully understand:

Code:

[nick@nick-pc-3 ~]$ java -version
openjdk version "1.8.0_252"
OpenJDK Runtime Environment (build 1.8.0_252-b09)
OpenJDK 64-Bit Server VM (build 25.252-b09, mixed mode)

When I look in 'Add/remove software' it tells me both OpenJDK Java 10 full and headless are installed (plus earlier versions too).

What I don't understand is how to a) check and b) remedy if necessary that the correct java version is available in the way Minimwatch 2 will need it. In other words, I think I need a little unpacking of this section of the Minimwatch 2 installation guide:

"After installing Java, use the command
java -version
to make sure Java is installed correctly and is available on the path. This is important for correct operation of the MinimWatch command scripts. "

I have done a quick search on the forum, but if the guidance/explanation I'm seeking is already out there and I've not found it, please forgive me and point me to a link.

Great to see the MinimServer eco system evolving like this, btw - congratulations!