What does @ManyToMany mean?

Question

Java

Please explain what this code means:

@ManyToMany(mappedBy = "roles")
    private Set<User> users;

Answer 1

Many-to-many relationship.
Specifically in your example: each user can have multiple roles, and multiple people can be assigned to each role.
Example
Vasya has 2 roles in your system: editor, administrator
At the same time, there may be other administrators in the system.