Where I am it's hard to find quality people period. If anything targeting Kotlin or Scala developers usually yields slightly better developers but also further restricts an already small candidate pool.

You are talking about more people than there are people in my country (around 10 millions java devs are out there)

I’m sure you can find a hole in your logic. (I’ll point it to you, millions of Java devs are not your hiring pool)

Really? So you mean to say there are no quality people in the millions of Java programmers out there?

No quality people - no, small amount - yes. And millions of Java devs are not your pool.

What is a small amount? 1%? 0.1%?