Answer 1

https://www.xenonstack.com/blog/overview-of-kotlin-comparison-between-kotlin-java
https://kotlinlang.org/docs/reference/comparison-to-java.html
https://www.androidauthority.com/kotlin-vs-java-783187/
https://www.quora.com/What-are-the-differences-between-Java-and-Kotlin

^Top four results from Google search engine. Almost a million hits on the subject.

https://www.google.com/search?q=difference+between+java+and+kotlin&oq=difference+between+java+and+kotlin&aqs=chrome..69i57j0.3711j0j7&sourceid=chrome&ie=UTF-8

^The actual search. Check it out; search engines are amazing websites that allows us to search for whatever we're looking for online, such as resources or answers to questions.