Beginner's installation problem in linux

[chrisnd]

I feel I also need to ask why I should need to do this?

Hi Chris,

to run RouteConverter you have to make the jar file executable.

I'm not quite sure, but AFAIK Ubuntu 20 comes with OpenJRE11, there should be no need to install an extra Java runtime environment.

Thanks, Yes, I've changed the rights and the program runs ok. :-)
Still concerned why isn't this do-able in Ubuntu software downloader?
But hey ho, it works :-))
Cheers, Chris