public class Card {
public enum Rank { DEUCE, THREE, FOUR, FIVE, SIX,
    SEVEN, EIGHT, NINE, TEN, JACK, QUEEN, KING, ACE }

public enum Suit { CLUBS, DIAMONDS, HEARTS, SPADES }

private final Rank rank;
private final Suit suit;
private Card(Rank rank, Suit suit) {
    this.rank = rank;
    this.suit = suit;
}

public Rank rank() { return rank; }
public Suit suit() { return suit; }
public String toString() { return rank + " of " + suit; }

private static final List<Card> protoDeck = new ArrayList<Card>();

// Initialize prototype deck
**static** {
    for (Suit suit : Suit.values())
        for (Rank rank : Rank.values())
            protoDeck.add(new Card(rank, suit));
}

public static ArrayList<Card> newDeck() {
    return new ArrayList<Card>(protoDeck); // Return copy of prototype deck
}

}

I have a quick question. The code block that starts right after the static keyword declaration, what type of method is that ? I haven't ever seen that before. If anyone could enlighten me, that would be greatly appreciated. Thanks.