Table 관계도 Entity @Entity public class Person { @Id @GeneratedValue private int id; private String name; @OneToOne @JoinColumn(name = "cellular_id") private Cellular cellular; public Person() {} public Person(String name, Cellular cellular) { this.name = name; this.cellular = cellular; } // getter and setter @Override public String toString() { return "Person{" + "id=" + id + ", name='" + name + ..