Kotlin has 100% interoperability with Java . Developers can naturally use the existing Java code. And Kotlin code, too, can be used in Java. The interoperability, combined with other developer-friendly features, made Kotlin popular among developers as what they call ‘better Java’.
Read moreIs Kotlin on the rise?
Other newish languages, such as Kotlin and Rust, have also risen in the rankings, although not as dramatically . For developers who hate working with older, well-established languages such as Java and JavaScript, many of these newer languages can act as an effective substitute.
Read moreWhy is Kotlin not more popular?
So, why not KOTLIN is not in top 3 programming language by rank? Kotlin does have a chance of getting closer to Java usage one day, because it can use the JVM, compile code natively without the JVM, and is pushed by Google .
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