Kotlin is designed in a way so that using its all features from Java was straightforward. Kotlin is a JVM language, so you can easily call Java code from Kotlin, but that also works in the other direction. You can even mix Kotlin and Java code in one project.

You can use all the existing Java frameworks and libraries from Kotlin. It's really easy to start using Kotlin, especially if you're a Java developer. We'll discuss: basic syntax, nullability, functional programming with Kotlin, object-oriented programming with Kotlin, the power of the Kotlin standard library, and Java interoperability. Note that this course won't cover the programming fundamentals. The course is based on your Java experience it shows the similarities between the two languages and focuses on what's going to be different. We'll have a basic overview of the language, as well as a discussion of many corner cases, especially concerning Java interoperability.

This course aims to share with you the power and the beauty of Kotlin. Kotlin code might be compiled not only to JVM bytecode but to JavaScript and Native code as well, but this course is focused on Kotlin/JVM. It’s a pragmatic language with a very low learning curve, and can be quickly grasped by Java developers. Kotlin is 100% compatible with all existing Java frameworks, and has good tooling support. It can be used almost everywhere Java is used today: for server-side development, Android apps, and much more. Kotlin is concise, safe, pragmatic, and focused on interoperability with Java code. The Kotlin programming language is a modern language that gives you more power for your everyday tasks.

Java to kotlin online converter