The question is which is better Kotlin or Java. With the appearance of Kotlin this struggle started in 2011, when at the same time, Java was completely beating any new competitors off. With the help of Google and JetBrains, Kotlin was developed to eliminate any of Java’s faults. Beginning with the Google I/O 2017 Developer Conference, Kotlin started to move into a high level.
Android and Java have always been connected. Android SDK is even written in Java. The situation has started to change after the invention of Kotlin.
Is it possible for Kotlin to replace Java completely? Is it difficult to find good Kotlin developers?
Here https://mlsdev.com/blog/kotlin-vs-java you will find out about this and about the benefits and drawbacks of each language.