
Not only that, Kotlin and Java are interoperable, meaning that you can use Kotlin and Java in the same application.

When it comes to learning Kotlin, Java developers have a head start as Kotlin can be compiled to run on the JVM. The number of Kotlin jobs on job boards is also increasing, so it’s well worth taking a look at the language. According to the official Kotlin site, companies like Pinterest, Gradle, Uber, Coursera, and Evernote are using Kotlin in some way. Kotlin is the brainchild of JetBrains, the same company behind the popular IntelliJ IDEA IDE. It can also be compiled to JavaScript, an Android application, or a native application (this feature is currently in development, but preview releases are available).

Kotlin is an object-oriented, statically-typed language that can be compiled to run on the Java Virtual Machine.

Just a little over a year later, more and more developers and companies are using it. When Google announced in May 2017 that Kotlin would become a first-class language for Android, many developers had never heard of it.
