As a current Java Android developer, I thought I would have to move to Kotlin someday, but I ended up going straight for it out of necessity. This course is by far the best. It teaches advanced technologies related to the latest Android by applying them to actual projects. Surprisingly, through the course that compares and develops the same project with Java and Kotlin, I am sure that if you have even a little bit of Java-based development experience, you will feel the urge to confidently apply Kotlin to your work. It explains the essential elements of Jetpack in detail, and includes development tips based on the instructor's many years of experience, dependency injection, and refactoring methods in one course... I think there is no easier way to learn Kotlin than by comparing the latest essential advanced Android development with Java code. Don't waste your precious time. It is truly the king of modern Android. Thank you for the valuable video.