public class testPerson
{
   public static void main(String[] args)
   {
      Person firstPerson = new Person();
      Person secondPerson = new Person("Bob", "Smith", 36);
      
      String fgn, sgn, fs, ss;
      int fage, sage;

      System.out.println("Using mutators on firstPerson...");
      firstPerson.setGivenName("Bob");
      firstPerson.setSurname("Smith");
      firstPerson.setAge(36);
      fgn = firstPerson.getGivenName();
      sgn = secondPerson.getGivenName();
      fs = firstPerson.getSurname();
      ss = secondPerson.getSurname();
      fage = firstPerson.getAge();
      sage = secondPerson.getAge();
      
      
      System.out.println("fgn = " + System.identityHashCode(fgn));
      System.out.println("sgn = " + System.identityHashCode(sgn));
      System.out.println("fs = " + System.identityHashCode(fs));
      System.out.println("ss = " + System.identityHashCode(ss));
      System.out.println("fage = " + fage);
      System.out.println("sage = " + sage);
      System.out.println("fgn == sgn " + (fgn == sgn));
      System.out.println("fs == ss " + (fs == ss));

      
      System.out.println("\nUsing makeCopy()...");
      firstPerson.makeCopy(secondPerson);
      
      fgn = firstPerson.getGivenName();
      sgn = secondPerson.getGivenName();
      fs = firstPerson.getSurname();
      ss = secondPerson.getSurname();
      fage = firstPerson.getAge();
      sage = secondPerson.getAge();
      
      System.out.println("fgn = " + System.identityHashCode(fgn));
      System.out.println("sgn = " + System.identityHashCode(sgn));
      System.out.println("fs = " + System.identityHashCode(fs));
      System.out.println("ss = " + System.identityHashCode(ss));
      System.out.println("fage = " + fage);
      System.out.println("sage = " + sage);      
      System.out.println("fgn == sgn " + (fgn == sgn));
      System.out.println("fs == ss " + (fs == ss));
      
      
      System.out.println("\nUsing getCopy()...");
      firstPerson = secondPerson.getCopy();
      
      fgn = firstPerson.getGivenName();
      sgn = secondPerson.getGivenName();
      fs = firstPerson.getSurname();
      ss = secondPerson.getSurname();
      fage = firstPerson.getAge();
      sage = secondPerson.getAge();
      
      System.out.println("fgn = " + System.identityHashCode(fgn));
      System.out.println("sgn = " + System.identityHashCode(sgn));
      System.out.println("fs = " + System.identityHashCode(fs));
      System.out.println("ss = " + System.identityHashCode(ss));
      System.out.println("fage = " + fage);
      System.out.println("sage = " + sage);      
      System.out.println("fgn == sgn " + (fgn == sgn));
      System.out.println("fs == ss " + (fs == ss));

   }
   
}