How to implement a category for collection items?

Question

Java

Good afternoon, dear development gurus,
I'm trying to write a simple program for maintaining a to-do list. confused at the moment how best to model in the program the concept of a category for each of the tasks. in tax managers that I tried to use, usually each task can be assigned more than one category.
while thinking about the option to write down the category through the enumeration (enum). but enum seems to be able to store only integer values, not strings,
I will be grateful for your hints on how to do this

Answer 1

Hello.
Read about enum here . So you will understand that you are wrong about integer values. If you store categories as an enum, you will automatically close the user the ability to add their own categories. If this possibility is not needed, then enum can also be used. To store multiple categories in a task, you can add a Set of Categories to the task class.
Well, if you suddenly use the database in the application. Then you can make a table with categories, a table with tasks, and between them a link table to link tasks and categories.

Answer 2

enum + enumSet