This talk is an introduction to Kotlin for Java Developers of any experience level done by only live coding. There is no code on slides. The following topics are shown by live coding: - Types and Type inference - String templates - Expressions overstatements - Functions - Pattern matching - Null safety - Functional Programming - Extension Functions In the talk, I will compare the Java- and Kotlin ways of doing things and show the simplicity of using Kotlin instead of Java to do daily tasks that developers have to do. For example default arguments in Kotlin instead of method-overloading in Java etc.