Kotlin looks like Java and behaves like C, C++. It comes along with null safety feature, extension functions, smart casts, primary constructors, string templates, first-class delegation, type interface for variable property types, singletons, type projections, declaration-site variance, operator overloading, companion objects, data classes, separate interfaces for reading only and mutable collections, co-routines. Moreover, it is most importantly being used for mobile app development. Learn more!