If you're a Java developer who hasn't yet made the leap to Kotlin, this workshop is for you. Working as a group, we'll take existing Java code, convert it with a single IntelliJ command, and then refactor the results to idiomatic Kotlin. We'll see how to take advantage of the language to make code smaller, faster and more expressive, whilst at the same time interoperating with your existing application and Java libraries. In the afternoon we'll move from the prepared exercises to your code, working together to apply the techniques and insights from the morning to real codebases with real constraints. So if you have some code you'd like to start migrating, bring it along on a laptop with IntelliJ installed