Contus is an international IT agency that serves businesses in dozens of countries. This company offers custom development and management of mobile applications for various operating systems including Android. The most powerful programming language that is used to write the structure of an Android app is known as Java. For many years, this syntax has defined web apps and other solutions long before smartphones and tablets existed. In recent years, Contus has adapted to the major changes that have been made to Java and other open source scripts that define mobile and desktop apps. However, this company has managed to refine its own skills in order to keep up with market demands. Android is without a doubt the leading mobile platform in the world. Therefore, web developers need to learn all of the technical components of this operating system that will likely be updated many more times in the near future.