How to make a request to OpenWeatherMap and process the JSON response?

Question

Java

Good day.
I need to write a simple "weather forecast" application. I am using JAVA language.
I have a problem with forming a request and receiving a response from OpenWeatherMap with further processing. The question is how to do it correctly, otherwise the application starts but does not show anything.
And tell me how to use the debugger correctly? I wanted to see if the JSON object was empty, but I never found out.

I used this article as an example: https://code.tutsplus.com/ru/tutorials/create-a-we...
But the article is from 2014 and in it, it seems, the old request and response format compared to what currently offers Open weather map.

Project link: https://github.com/ZoRaToS/SimpleWeatherForecast

If it's not difficult for anyone, point me in the right direction, please.

Answer 1

Here, here is the OpenWeatherMap API documentation - https://rapidapi.com/community/api/open-weather-map
Here, either for Retrofit requests - https://square.github.io/retrofit/
Here, either for Json deserialization to an object (Jackson, Gson) -
https://www.baeldung.com/jackson
https://www.baeldung.com/jackson-vs-gson
Now it remains only to study the API according to the documentation, execute the request using Retrofit and deserialize json to an object using jackson || gson