Analysis of the use of Java and C# languages for building a mobile application for the Android platform.

Mobile applications for the Android platform can be implemented using Java or C#. The article presents a comparison of the time performance of these languages when sending various text, image and video files in a mobile application. The tests were carried out using two mobile applications with identical functionalities. Based on the collected data, the server application calculated statistics, such as, for example, the time required to send 1MB of data depending on the file type and size. Based on the results obtained, it was proved that in the case of data transfer via a wireless network, an application written in Java is characterized by greater time efficiency than an analogous application written in C#.