Should I learn Java before learning Kotlin?

Answer 1

No... you should learn Kotlin

Kotlin got rid of all the garbage which Java collected through all the years.
The only point ist, that Kotlin can use Java libraries. But for this 20% learning 100%
Sounds not sensible to me.

Answer 2

Thank you!

Answer 3

However for a basic level I would recommend to learn Java SE as start. Kotlin is great, but Java gives more depth of understanding as a programmer, about what is happening in the background, imo. Kotlin is a fancy Java, I would recommend it, like learning some C before deep C++. I say you should see a getter method, before making one for a property. You will know what it is, and why it works in a way it does.

On the other hand leaving fancy parts of Kotlin first and learning it gradually may end up just the same.

Java is a great base for Kotlin tho.