package org.example; import java.util.Set; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.ManyToMany; import javax.persistence.Table; @Table(name="o_role") @Entity public class Role { @Id Long id; @ManyToMany private Set users; public Long getId() { return id; } public void setId(Long id) { this.id = id; } public Set getUsers() { return users; } public void setUsers(Set users) { this.users = users; } }