Yes, everything is, Java is not needed. You can easily learn Kotlin, if you are not afraid that vacancies are less. Features of the jvm, then you can learn.
roxanne.Kun answered on April 3rd 20 at 17:51
The syntaxes of the languages you can learn in a month. They are simple.
But then you will need an understanding of how the jvm works. But here's the problem - most books on java this explains. Most books on Kotlin is skipped. (For a few reasons. But, IMHO, the main that these books are written for people who already know how to program in java)
Therefore, choosing the first language of kotlin, in parallel, get ready to take a book on java and learn what lies behind the syntax.
The result: while no proper textbooks for the primary level. After a year or two, I think it will be possible to study one book programming in kotlin from the beginning to an acceptable level.