I have a "Card" class which has objects that represent cards out of a
standard poker deck.  I statically initialize the array.

My basic question is: Are there circumstances in which the following
code will not produce "==" comparable Card objects? These objects may
be passed through RMI or otherwise serialized.

<sscce>
import java.io.InvalidObjectException;
import java.io.ObjectStreamException;

public final class Card {
 static final long serialVersionUID = 1L;

 public enum Suit {
   DIAMOND,
   CLUB,
   HEART,
   SPADE;
 }

 public static final int SUITS = Suit.values().length;
 public static final int CARDS_PER_SUIT = 13;
 public static final int NUM_CARDS = SUITS * CARDS_PER_SUIT;
 private static final Card[] cards = new Card[NUM_CARDS];
 private static final String[] numbers = new String[NUM_CARDS];

 public static final int JACK_ORDINAL = 10;
 private static final int QUEEN_ORDINAL = JACK_ORDINAL + 1;
 private static final int KING_ORDINAL = QUEEN_ORDINAL + 1;

 static {
   numbers[0] = "A";
   for (int i = 1; i < JACK_ORDINAL; ++i) {
     numbers[i] = String.valueOf(i + 1);
   }
   numbers[JACK_ORDINAL] = "J";
   numbers[QUEEN_ORDINAL] = "Q";
   numbers[KING_ORDINAL] = "K";
   for (int i = 0; i < NUM_CARDS; ++i) {
     cards[i] = new Card(i);
   }
 }

 public final transient Suit suit;
 public final transient String number;
 public final transient int value;
 public final int ordinal;

 private Card(int ordinal) {
   this.ordinal = ordinal;
   final int suitOrdinal = ordinal / CARDS_PER_SUIT;
   final int cardOrdinal = ordinal % CARDS_PER_SUIT;
   value = cardOrdinal == 0 ? KING_ORDINAL : cardOrdinal - 1;
   suit = Suit.values()[suitOrdinal];
   number = numbers[cardOrdinal];
 }

 protected final Object clone() throws CloneNotSupportedException {
   throw new CloneNotSupportedException();
 }

 protected final Object readResolve() throws ObjectStreamException {
   if (ordinal < 0 || NUM_CARDS <= ordinal) {
     throw new InvalidObjectException("Not a valid card.");
   }
   return forOrdinal(ordinal);
 }

 public static Card forOrdinal(int ordinal) {
   return cards[ordinal];
 }
}
</sscce>