Card Shuffling and Dealing Simulation

Card has a face (e.g., "Ace", "Deuce", "Three", ..., "Jack", "Queen", "King") and a suit (e.g., "Hearts", "Diamonds", "Spades", "Clubs"). 

//Cards.javapublic class Cards {private String face;private String suit;public Cards(String cardFace, String cardSuit){face = cardFace;suit = cardSuit;}public String toString(){return  "[" + suit + "] " + face ;}}

//DeckOfCards.javaimport java.util.Random;public class DeckOfCards {private int currentCard;private Cards deck[];private Random r;private final int NUMBER_OF_CARDS = 52;public DeckOfCards (){String[] face = {"A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"};String[] suit = {"Hearts", "Diamonds", "Clubs", "Spades"};deck = new Cards[NUMBER_OF_CARDS];currentCard = 0;r = new Random();for(int i=0; i<deck.length; i++){deck[i] = new Cards(face[i%13], suit[i/13]);}}public void shuffle(){for(int first=0; first<deck.length; first++){int second = r.nextInt(NUMBER_OF_CARDS);Cards tmp = deck[first];deck[first] = deck[second];deck[second] = tmp;}}public Cards dealCard(){if(currentCard < deck.length)return deck[currentCard++];else return null;}}

//DeckOfCardsTest.javapublic class DeckOfCardsTest {public static void main(String[] args){DeckOfCards deck = new DeckOfCards();deck.shuffle();for(int i=0; i<13; i++){//System.out.printf("%-20s%-20s%-20s%-20s\n", //deck.dealCard(), deck.dealCard(), deck.dealCard(), deck.dealCard());System.out.println(deck.dealCard().toString() + "\t" + deck.dealCard().toString() + "\t" +deck.dealCard().toString() + "\t" + deck.dealCard().toString());}}}