Re: Shuffled Poker Deck

"Daniel Pitts" <>
23 Jan 2007 13:08:49 -0800
Martin Krainer wrote:

Hi all,
Im new to Java, and as Training for me I tried to build an Application,
which returns a shuffled Pokerdeck. (Random from 1 to 52)
Maybe you will laugh, but i needed a whole day to solve it, and I think its
even not good solution.
Well, at least it works, but please could you give me a hint, how to solve
this problem easier.
Heres the code:

[snip the code]

Well, it doesn't look all that great to me.
Here's one that looks better.

class Deck {
    final java.util.List<Card> cards;
    private static final int DECK_SIZE = Card.NUMBER_OF_CARD_TYPES;

    public Deck() { = new java.util.ArrayList<Card>();
        for (int i = 0; i < DECK_SIZE; ++i) {

    public void shuffle() {

    public void print() {
        for (Card card: cards) {
            System.out.print(" '" + card + "' ");

class Card {
    private static final int NUMBER_OF_VALUES = Value.values().length;
    private static final int NUMBER_OF_SUITS = Suit.values().length;
    public static final int NUMBER_OF_CARD_TYPES =

    enum Suit {
        diamonds, clubs, hearts, spades;
        private static Suit forOrdinal(int ordinal) {
            return values()[ordinal / NUMBER_OF_VALUES];
    enum Value {
        ace, two, three, four, five, six, seven, eight, nine, ten,
jack, queen, king;

        private static Value forOrdinal(int ordinal) {
            return values()[ordinal];
    final Suit suit;
    final Value value;
    private Card(Suit suit, Value value) {
        this.suit = suit;
        this.value = value;
    public static Card forOrdinal(int ordinal) {
        return new Card(Suit.forOrdinal(ordinal),

    public String toString() {
        return value.toString() + " of " + suit.toString();

public class Poker {
    public static void main(String[] args) {
        Deck deck = new Deck();

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