Alright, but maybe take a look into something like Zenity. The task done by your tool doesn’t really justify installing a huge JRE, when a simple bash script would suffice.

Why do you need cross platform availability, if .desktop files are (mostly) Linux only?

AnyDesk, best performance I’ve experienced when it comes to screen sharing.

Ich kenne diese Band!

Rare to see people with common sense these days.