Java Tutorial/JPA/Embeddable

Embeddable Entity

File: Student.java

   <source lang="java">

import javax.persistence.Embedded; import javax.persistence.Entity; import javax.persistence.Id; @Entity public class Student {

   @Id private int id;
   private String name;
   @Embedded private Address address;
   public int getId() {
       return id;
   }
   
   public void setId(int id) {
       this.id = id;
   }
   
   public String getName() {
       return name;
   }
   
   public void setName(String name) {
       this.name = name;
   }

   public Address getAddress() {
       return address;
   }
   
   public void setAddress(Address address) {
       this.address = address; 
   }
   public String toString() {
       return "Student id: " + getId() + " name: " + getName() +
              " with " + getAddress();
   }

}</source>

Embedded Objects Multiple Tables

File: Address.java

   <source lang="java">

import javax.persistence.Column; import javax.persistence.Embeddable; @Embeddable public class Address {

   private String street; 
   private String city; 
   private String state;
   @Column(name="ZIP_CODE")
   private String zip;
   public String getStreet() {
       return street;
   }
   
   public void setStreet(String address) {
       this.street = address;
   }
   public String getCity() {
       return city;
   }
   public void setCity(String city) {
       this.city = city;
   }
   public String getState() {
       return state;
   }
   public void setState(String state) {
       this.state = state;
   }
   public String getZip() {
       return zip;
   }
   public void setZip(String zip) {
       this.zip = zip;
   }
   public String toString() {
       return "Address street: " + getStreet() +
              ", city: " + getCity() +
              ", state: " + getState() +
              ", zip: " + getZip();
   }

}</source>

Share Embeddable Entity

File: Company.java

   <source lang="java">

import javax.persistence.Embedded; import javax.persistence.Entity; import javax.persistence.Id; @Entity public class Company {

   @Id private String name;
   @Embedded
   private Address address;
   public String getName() {
       return name;
   }
   
   public void setName(String name) {
       this.name = name;
   }
   public Address getAddress() {
       return address;
   }
   
   public void setAddress(Address address) {
       this.address = address; 
   }
   public String toString() {
       return "Company name: " + getName() +
              " at " + getAddress();
   }

}</source>