Poker.java

import java.util.Scanner;

/**
 * A 2-card poker game played between a human and a computer player
 *
 * @author paw: Phil White
 */
public class Poker {
    /**
     * a boolean toggle that tells the order of making the stand/fold
     * decision.  This flips after each hand
     */
    private static boolean playerGoesFirst = true;

    /**
     * Plays a single hand of poker
     *
     * @param person the human player
     * @param comp the computer player
     * @param deck the deck
     * @return an int telling if the user lost/tied/won (neg/0/pos)
     */
    public static int playHand(Human person, Computer comp, Deck deck) {
        boolean personStand = true, dealerStand = true;
        int playerWon;

        System.out.println("== Dealing Cards\n");
        //give initial cards
        for (int j = 0; j < 2; j++) {
            person.addCard(deck.dealCard());
            comp.addCard(deck.dealCard());
        }

        System.out.println("==============  Your Cards  ========");
        person.printHand();

        // ask both players if they want to stand
        if (playerGoesFirst) {
            personStand = person.stand();
        }

        if (personStand) {
            dealerStand = comp.stand();
            if (dealerStand) {
                System.out.println("Computer Stands");
            } else {
                System.out.println("Computer Folds");
            }
        }

        if (!playerGoesFirst && dealerStand) {
            personStand = person.stand();
        }

        System.out.println("==============  House Cards ========");
        comp.printHand();

        playerGoesFirst = !playerGoesFirst;
        if (personStand && dealerStand) {
            //check player win vs. computer
            playerWon = person.compareTo(comp);
        } else if (personStand) {
            playerWon = 1;    // player won by default
        } else {
            playerWon = -1;    // House won by default
        }

        // have everyone throw in their cards
        person.newHand();
        comp.newHand();

        return playerWon;
    }

    /**
     * Main method -- plays multiple hands of poker, after each hand
     * ask the user if they want to play again.  We also keep trak of
     * the number of games played/won by the user and print the results
     * at the end.
     *
     * @param args command line arguments
     */
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        String again;
        char c;
        int playerWon;
        int numGames = 0;
        int numWon = 0;
        int numTie = 0;

        Deck theDeck = new Deck();
        Computer theComputer = new Computer();
        Human theHuman = new Human(in);

        do {
            numGames = numGames + 1;

            System.out.println();
            System.out.println("##########################################");
            System.out.println("##########       NEW HAND      ###########");
            System.out.println("##########################################");
            System.out.println("\n== Shuffling");
            theDeck.shuffle();

            playerWon = playHand(theHuman, theComputer, theDeck);
            if (playerWon > 0) {
                System.out.println("\n  **** Human Won ****\n");
                numWon = numWon + 1;
            } else if (playerWon == 0) {
                System.out.println("       Tie Game");
                numTie = numTie + 1;
            } else {
                System.out.println("\n  ---- House Won ----\n");
            }

            do {
                System.out.print("Do you wish to play " +
                        "another hand (y/n):");
                again = in.nextLine();
                again = again.toLowerCase();
                c = again.charAt(0);
            } while (c != 'y' && c != 'n');

        } while (c == 'y');

        System.out.println("========== Results ==========");
        System.out.println("Games:\t" + numGames);
        System.out.println("Wins:\t" + numWon);
        System.out.println("Ties:\t" + numTie);

        in.close();  // <3 Jim
    }
}