How to create join table with JPA annotations?

Question

I need to create a join table in my database using JPA annotations so the result will be this:

Answer 1

I would implement it this way:

@Entity
@Table(name="GROUPS", schema="ADMIN")
public class Group implements Serializable {
  @OneToMany
  @JoinTable(name = "USER_GROUP",
            joinColumns = @JoinColumn(name = "groupid"),
            inverseJoinColumns = @JoinColumn(name = "userid"))
  private List users;
}

Solution suggested by @PedroKowalski should work too, but then you'll have to keep a reference to Group entity in your User entity which is not always possible.