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Devoxx Ukraine 2020 becomes a FREE ONLINE event 6-7th of November Kyiv, Ukraine Registration: Have you ever thought of switching from our 'good old java' to something modern, more convenient, less verbose and elegant? Do you enjoy dealing with irritating things such as getters & setters, stupid type casting, poor switch, lambdas, checked exceptions, NPE...? Some of the java developers can't stand it so much, that's how many other JVM-based languages appeared. One of the most popular and interesting languages is Scala. On the one hand, it was a breath of fresh air for some java devs, on the other hand, it was too complicated for other developers... Then Kotlin appeared! The popularity of this language is constantly growing. And finally, some scala addicted companies started investigating it. In this talk, we won't compare these 2 JVM citizens. We will try to understand, how they can leave together in one codebase, why do we need this kind of relat
