Install Julia from the website http://julialang.org
Add an alias julia or copy the path you are using to execute julia programs in the Executor Path Configuration of CupCarbon:
Refer to Tutorials 1, 2 and 3 of the page Start with CupCarbon.
You can write Julia programs as explained in Section "Start With CupCarbon". The following Julia program allows to display alternately Hellow World! and the Blink (mark/unmark) of the device: