Basics

Kotlin is compiled to Java bytecode, which provides the backward compatability. When wishing to see Kotlin in real-life J2K converter can be used to convert part of source code into Kotlin. Another way is to start writing unit tests in Kotlin.

Kotlin standard library is just Java standard library and a bunch of extensions which provides very smooth interoperability between Java code and Kotlin code.

In IntelliJ we can use the Show Kotlin bytecode + Decompile features to see the Java alternative for the Kotlin code.

Reference on Kotlin conventions

• Kotlin for Java developers course part
• Kotlin coding conventions

Kotlin roadmap

• Kotlin roadmap