For what it's worth, Scala is a multi-paradigm language and can be used as a pure OO language. This is a great way to start for programmers with an OO background

I'm not sure it's a good idea though. Scala failed (mainly to Kotlin) as a "better Java". If you aren't committed to Scala's unique features, I would avoid it. It doesn't mean you need to go all in though, Scala can be simple, simpler than Java in fact.