Java with patterns:Repository, DAO, Singleton, MVC, Factory

The course project is about the creation of an application that will present a list of cocktails and
allow the user to save their favorites. For the successful development of the project, certain design patterns need to be followed.
On application start, a menu will be presented to the user to choose an Operating System (OS)
and depending on the choice of the user the main windows will open with a UI corresponding
to the OS selected.