Notability is a qualified state on Wikipedia, as both TFA and Wikipedia itself document.

One of the qualifications is having third-party sources document the subject, where those third-party sources are themselves notable and reputable (in the subject area). A company’s statement that it uses a programming language might be factual, but that doesn’t necessarily make it notable.

(To be clear: I was only vaguely aware of Odin, and I have no idea who/what JangaFX. But that isn’t dispositive.)