@Entity

@Table(name = "Employee")

public class EmployeeEntity implements Serializable {

​

    //...

​

  @OneToMany

  @OrderBy("zipcode.zip ASC")

  private Set<AddressEntity> addresses;

}

​

@Embeddable 

public class AddressEntity {

     //...

   @Embedded protected Zipcode zipcode;

}

​

@Embeddable 

public class Zipcode {

   protected String zip;

   protected String plusFour;

}