I have to propose an app development project in Adroid to a company where i will start soon. I am not sure if I should do that in Android Studio : Java or kotlin . Google says Android's official dev language is Kotlin . But I have all the help and training material on Java. I took a course on Android Studio Java as well . My back ground , however , is C#. I do not want to propose something which is going to haunt me in future. Also I have no Kotlin back ground . I have to get started in probably 2 weeks time. Thanks.