How to set WM_CLASS for GNOME?

[Alex Orlov]

Hello,
 
I develop a JavaFX application for Linux. And on my Ubuntu 20 I have a problem. I do `stage.setTitle("Foo");` and
I have a window with title `Foo`, but in Ubuntu top bar I see the name of the class `com.foo.bar.FooApplication`.
 
As I understand I should set correctly WM_CLASS. The only solution I found is this one
https://stackoverflow.com/a/54467323/5057736 
 
However, I work in JPMS and I can’t access com.sun.glass.ui.Application. Could anyone say how I can make my
JavaFx application show "Foo" instead of class name in Ubuntu top bar?
 
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Best regards, Alex Orlov