B4J Question Jar app wouldn't run on Mac

[Beja]

It started by telling me that this app can't run because it is from unknown developer or something like that.. then I figured out how to bypass this, only to know that this time I must install Java JDK.
Is this how it works?

 

[Erel]

You need to install Java JRE.

Another option is to create a self contained installer: UI apps packaging - self contained installers