Question

I have my primary class running, and I wanted to run a separate class to shuffle numbers, then return the shuffled numbers into my primary class. In my shuffle class I have the return statement… but now what do I do? How do I use the random order of my int array in my primary class?

Here is my shuffle class:

public class Shuffle {
public static int[] getShuffle() {
    int[] cards = new int[52];
    ArrayList<Integer> cards_objs = new ArrayList<Integer>();

    for (int i = 0; i < cards.length; i++) {
        cards_objs.add(i);
    }

    Collections.shuffle(cards_objs);

    for (int i = 0; i < cards.length; i++) {
        cards[i] = cards_objs.get(i);

    }

    return cards;
}

}

I am making a card game(if you cant tell);

I wanted to use this shuffle class so that the cards are shuffled… but no card appears more than once.

when I return cards, how do I use them in my game class?
for example if the first number in the array is 1, then the card is Ace of clubs,
if the number is 2, then the card is Ace of diamonds. and so on…
I apologize for not posting enough information… I am new to java (as you can tell)

all help will be greatly appreciated,

-Steve

EDIT:
I found out what my problem was, I don’t think I made it clear enough what my question was. Nonetheless thank you all for your help, it gave me ideas on different ways to approach this project.

Answer 1

I think using enum you can implement Card Game in a better way.

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

// This is just sample example  and it is just to show an approach. I had not enough time    to make code perfect but it works fine.
public enum Deck
{
DECK;
enum Rank
{
    DEUCE(2), THREE(3), FOUR(4), FIVE(5), SIX(6),
    SEVEN(7), EIGHT(8), NINE(9), TEN(10), JACK(10), QUEEN(10), KING(10), ACE(11);

    Rank(int rank)
    {
        this.rank = rank;
    }

    private final int rank;

}

enum Type
{
    SPADES,
    HEARTS,
    DIAMONDS,
    CLUBS;
}

class Card
{
    private final Rank rank;
    private final Type type;

    Card(Rank rank, Type type)
    {
        this.rank = rank;
        this.type = type;
    }

    @Override
    public String toString()
    {
        return type.name() + rank.name();
    }

}

static List<Deck.Card> cards = new ArrayList<Deck.Card>();
static
{
    for (Rank rank : Deck.Rank.values())
    {
        for (Type type : Deck.Type.values())
        {
            cards.add(DECK.new Card(rank, type));
        }
    }

}

List<Deck.Card> shuffle()
{
    Collections.shuffle(cards);
    System.out.println(cards);
    System.out.println(cards.size());
    return Collections.unmodifiableList(cards);
}

public static void main(String[] args)
{
    DECK.shuffle();
}
}