enum

I've always been concerned with the question of the Enum class: what advantages do they have over ordinary static final primitives? And, if possible, share your experience in which the use of Enum would really be justified.

Recently, I have been asking questions about the implementation of some data types that are actually part of the language its ... for self-development, as I really like to understand what is "under the engine". Thank you all so much for your help! :)

There is already a ready-made project with abonimentami. Depending on the subscription, the number of days visited varies. Th ... int with enum because I can't create it public enum Days { 10, 20, 30, 50 } Please tell me how to solve this problem