One to One Bi Directional mapping

Person.java

import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;


@Entity
public class Person {

 private int personID;

 private String personName;

 private PersonDetails myPersonDetails;

 @Id
 @GeneratedValue
 public int getPersonID() {
  return personID;
 }

 public void setPersonID(int personID) {
  this.personID = personID;
 }

 public String getPersonName() {
  return personName;
 }

 public void setPersonName(String personName) {
  this.personName = personName;
 }

 @OneToOne(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
 @JoinColumn(name="pDetail_fk")
 public PersonDetails getMyPersonDetails() {
  return myPersonDetails;
 }

 public void setMyPersonDetails(PersonDetails myPersonDetails) {
  this.myPersonDetails = myPersonDetails;
 }

}

PersonDetails.java

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;

@Entity
public class PersonDetails {

 private int personDetailID;

 private String zipCode;

 private String job;

 private double income;
 
 private Person myPerson;
 
 @OneToOne(mappedBy="myPerson" , cascade=CascadeType.ALL)
 public Person getMyPerson() {
  return myPerson;
 }

 public void setMyPerson(Person myPerson) {
  this.myPerson = myPerson;
 }

 @Id
 @GeneratedValue
 @Column(name="datailid_pk ")
 public int getPersonDetailID() {
  return personDetailID;
 }

 public void setPersonDetailID(int personDetailID) {
  this.personDetailID = personDetailID;
 }

 public String getZipCode() {
  return zipCode;
 }

 public void setZipCode(String zipCode) {
  this.zipCode = zipCode;
 }

 public String getJob() {
  return job;
 }

 public void setJob(String job) {
  this.job = job;
 }

 public double getIncome() {
  return income;
 }

 public void setIncome(double income) {
  this.income = income;
 }
}

Test.java

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.tool.hbm2ddl.SchemaExport;


public class Test {

 /**
  * @param args
  */
 public static void main(String[] args) {
  AnnotationConfiguration config=new AnnotationConfiguration();
  config.addAnnotatedClass(Person.class);
  config.addAnnotatedClass(PersonDetails.class);
  config.configure("hibernate.cfg.xml");
  
  new SchemaExport(config).create(true, true);
  SessionFactory factory=config.buildSessionFactory();
  Session session=factory.getCurrentSession();
  session.beginTransaction();
  
  PersonDetails pd1=new PersonDetails();
  pd1.setIncome(30000.65);
  pd1.setJob("Software Engineer");
  pd1.setZipCode("201222");
  
  Person p1=new Person();
  p1.setPersonName("Kanishka Dilshan");
  p1.setMyPersonDetails(pd1);
  
  session.save(p1);
  
  session.getTransaction().commit();
 }

}