need help with this java program -

I wrote this program that is a card game that the end goal is to match 4 cards of the same value(1,2,3,4,5,6 etc..) but with all 4 different suits..for example

*queen of hearts, queen of spades, queen of diamonds, queen of clubs.* -> if a player gets this output then the game is over and that player has won.

What I need help with: i need to change my ArrayList to a Queue for the deck in my main class. (CardGame.java)

Also I need to make my computer Player class more functional, for example making it able to win the game. (ComputerPlayer.java)

here is my code so far:

****CardGame.java********

package cardgame;

import java.util.ArrayList; import java.util.Random; import java.util.Scanner; import java.util.Stack;

/** * * @author */ public class CardGame {

ArrayList deck; //need this in a queue ComputerPlayer computer; Player human; Stack discardPile;

public CardGame() { char suit[] = {'H', 'S', 'D', 'C'}; deck = new ArrayList(); for (int i = 0; i < 4; i++) { for (int j = 1; j <= 13; j++) { deck.add(new Card(j, suit[i])); } }

discardPile = new Stack();

human = new Player(); computer = new ComputerPlayer(); }

private void shuffle() { int size = deck.size(); Card card; Random random = new Random(); for (int i = 0; i < size; i++) { card = deck.remove(random.nextInt(size)); deck.add(card); } }

public void start() { shuffle(); for (int i = 0; i < 4; i++) { human.addCard(deck.remove(0)); computer.addCard(deck.remove(0)); } int turn = 0; int choice; Card current; Card top; Scanner in = new Scanner(System.in); while (!human.hasWon() && !computer.hasWon()) { if (deck.isEmpty()) { deck.addAll(discardPile); discardPile.clear(); shuffle(); }

if (turn == 0) { System.out.println("Your cards are: "); human.displayCards(); System.out.println(""); if (discardPile.isEmpty()) { choice = 2; System.out.println("The discard pile is empty, draw a card."); System.out.println("");

} else { top = discardPile.peek(); System.out.println("The top of the discard pile is the " + top); System.out.println("Do you want to pick up the " + top.toString() + "(1) or draw a card (2)"); choice = in.nextInt(); }

if (choice == 1) { current = discardPile.pop(); System.out.println("You picked up " + current);

} else { current = deck.remove(0); System.out.println("You drew " + current); } human.addCard(current); System.out.println("Now your cards are "); human.displayCards(); System.out.println(""); System.out.println("Which one do you want to discard ?"); choice = in.nextInt(); discardPile.push(human.discard(choice - 1)); } else { if (!discardPile.isEmpty() && discardPile.peek().getValue() == computer.getMaxValue()) { top = discardPile.pop(); System.out.println("I will pick up the " + top); computer.addCard(top);

} else { System.out.println("I will draw a new card."); current = deck.remove(0); computer.addCard(current); } current = computer.discard(); discardPile.push(current); System.out.println("I will discard the " + current); }

turn = 1 - turn; }

}

public void finish() { System.out.println("--------------------------"); System.out.println("My cards are "); computer.displayCards(); System.out.println("--------------------------"); System.out.println("Your cards are "); human.displayCards(); System.out.println("--------------------------"); if (human.hasWon()) { System.out.println("You have won !"); } else { System.out.println("the computer wins !"); } System.out.println("--------------------------"); }

public static void main(String[] args) { CardGame game = new CardGame(); game.start(); game.finish(); } }

***end of cardgame.java******

here is player class

******player.java***************

package cardgame;

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

public class Player {

String name; ArrayList cards;

public Player(String playerName) { name = playerName; }

public Player() { cards = new ArrayList(); }

public void addCard(Card card) { cards.add(card); Collections.sort(cards); }

public Card discard(int index) { return cards.remove(index); }

public Card getCard(int index) { return cards.get(index); }

public boolean hasWon() { int value = cards.get(0).getValue(); for (int i = 1; i < cards.size(); i++) { if (cards.get(i).getValue() != value) { return false; } else { } }

return true; }

public void displayCards() { for (int i = 0; i < cards.size(); i++) { System.out.println(i + 1 + ". " + cards.get(i)); } }

}

*****end of player.java*****

here is computerplayer class

*****ComputerPlayer.java************

package cardgame;

public class ComputerPlayer extends Player {

private int decideDiscard() { int pValue = cards.get(0).getValue(); int index = 0; int count = 1; int min = 1; for (int i = 1; i < cards.size(); i++) { if (cards.get(i).getValue() != pValue) { if (count < min) { min = count; index = i - 1; pValue = cards.get(i).getValue();

} count = 1;

} else { count++; } } return index; }

public Card discard() { return cards.remove(decideDiscard()); }

public int getMaxValue() { int pValue = cards.get(0).getValue(); int count = 1; int max = 1;

for (int i = 1; i < cards.size(); i++) { if (cards.get(i).getValue() != pValue) { if (count > max) { max = count; pValue = cards.get(i).getValue(); } count = 1; } else { count++; } } return pValue; } }

***end of computerplayer class********

here is card class

*****Card.java*********

package cardgame;

public class Card implements Comparable {

int value; char suit; private static final String[] VALUENAMES = {"", "Ace", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King"};

public Card(int cardValue, char cardSuit) { value = cardValue; suit = cardSuit; }

int getValue() { return value;

}

char getSuit() { return suit; }

@Override public int compareTo(Card c) { if (value < c.value) { return -1; } else if (value > c.value) { return 1; } else { return 0; } }

@Override public String toString() { String suits = VALUENAMES[value] + " of "; switch (suit) { case 'H': suits += "Hearts"; break; case 'S': suits += "Spades"; break; case 'D': suits += "Diamonds"; break; default: suits += "Clubs"; break; }

return suits; }

}

****end of card.java**************