Like any other language, Java has the enum feature that allows us to enumerate items. It is helpful to list delimited items in your code, such as the seasons. And we can go beyond it with Java! It permits clean code design. Indeed, we can apply several patterns such as VO from DDD, Singleton, and Strategy from GoF using the Effective Java book as the main inspiration.
The power of enum: take advantage of it to make your code more readable and efficient.