The purpose of this final work is to showcase Android apps in the Android studio environment using Java's programming language used in object-oriented programming. The first part of the paper gives a theoretical view of mobile technologies. Android has been described as an operating system, and its features as well as the versions that developed from the moment Android was developed to date. Mobile applications are also explained. Then, in the methodology of work, the methods of object oriented programming were explained. The emphasis is placed on Java programming language, which is part of object-oriented programming, as well as the Java platform, and is an example of a Java programming code. In the third part, the results of the research is a show of Android apps in the Android studio environment. The online product ordering process steps are described and the steps that are required for the creation are described. The discussion shows the advantages and disadvantages of developing mobile apps in Android Studios, and work can be useful to people who are interested in something more about Android mobile applications.