@Entity()
@Table(name = "user")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = "id", referencedColumnName = "user_id")
    private Address address;

    public int getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

}



@Entity
@Table(name = "address")
public class Address extends com.mezoline.domain.common.Entity {

    @Id
    @GeneratedValue
    private int id;

    @OneToOne(mappedBy = "address")
    private User user;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

}