The app is based on full Java with JDK 13.0.1. + SWING as UI. The purpose is to show the diferent operations you can do in a Java app. You can Add a new city, Remove a city and look for a particular city information and set as favourite an app.
If you want to execute in your IDE, change the next file /src/model/ConnectToDB, look for the url command and replace it to the path /src/db/databse.
If you just want to see the app, you can place the .jar and database files in your desktop and execute it.