I am wondering if this is at all possible in Ubuntu 18.04 with Eclipse 2019-03 and Eclipse 2019-06. I am testing the new version in parallel to check for any issues we might have, before moving all developers over to it. I have two different .desktop files and both as favorites on the dock. When launched from their respective icons however, they both group on the older version. It would be a great quality of life improvement for me if I could have them on their own respective icons. It would be easier to switch correctly back and forth and a lot easier to see which version I'm currently in.
I have found this older question about it, but it has no answer. The xprop WM_CLASS is the same for both versions
$ xprop WM_CLASS
WM_CLASS(STRING) = "Eclipse", "Eclipse"
As suggested in the old question, I haven't been able to find a plugins.xml with properties regarding the name of the application. Is there any other way to separate these windows or applications so that they don't group on the dock?
Edit
I tried adding the --class flag to the Exec part of the desktop file but it is not having any effect on the WM_CLASS variable.
[Desktop Entry]
Name=Eclipse 2019-06 Java 11
Type=Application
Exec=/home/simonc/jee-2019-06/eclipse/eclipse --class Eclipse2
Terminal=false
Icon=/home/simonc/jee-2019-06/eclipse/icon2.xpm
Comment=Integrated Development Environment
NoDisplay=false
Categories=Development;IDE;
Name[en]=Eclipse 2019-06 Java 11
Name[en_US]=Eclipse 2019-06 Java 11
StartupWMClass=Eclipse2
The result is still
$ xprop WM_CLASS
WM_CLASS(STRING) = "Eclipse", "Eclipse"
