Question

Create a simplified Blackjack game using the Deck and Card classes (download the attached files to start).  There is also a "TestCard" class that creates a Deck and runs some simple code. You may choose to use this file to help you get started with your game program.

1) Deal 2 cards to the "player" and 2 cards to the "dealer".  Print both the player's cards, print one of the dealer's cards. Print the total value of the player's hand.

2) Ask the player if they want to "hit", i.e., if they want another card dealt to them.  If they say yes, deal another card to the player, print the new "hand" of cards, print the new value of their hand, and check to make sure the player has not "busted" (gone over a total of 21).  If the player busts, the game is over immediately and the dealer wins.  

3) Repeatedly ask the player if they want to "hit" until they either bust or they decide to "stay" (no more cards dealt). To make the game a little simpler, if the player manages to get five cards in their hand, without busting, they automatically win ("Five Card Charlie"), end the game.

4) If the player stays without busting and fewer than five cards, print out all the dealer's cards and then repeatedly hit the dealer until the dealer's total is at least 17 or the dealer busts.  If the dealer busts, the game is over immediately and the player wins.  If the dealer's total reaches 17 or higher without busting, calculate the dealer's total and the player's total.  The player closest to 21 wins.  If there is a tie, just print that it is a tie.

Note: The "face cards", Jack, Queen, King are all worth 10 points.  The Ace is worth either 1 or 11 points. You will need to handle the totaling the Aces last after you've totaled the other cards to be able to determine if they should count as 1 or 11. They should count as 11 if they can do so without busting the hand.

Note: Just make the game with the rules as described above. Don't worry about additional Blackjack rules like splitting, doubling-down, insurance, etc. You also don't need to implement any kind of "betting", just a one-hand game and who wins the hand.

Java language

Answer 1

The require BlackJack Program is given below, with all the requirements.In case of any query please ask me in comments. Please Thumbs Up.

BlackJackHand.java

/**
*
* @author Vaibhav
*/

import java.util.Scanner;
import java.util.Vector;

class Deck {

private Card[] d;   
private int cUsed;
  
  
public void shuffle() {
for ( int i = 51; i > 0; i-- ) {
int rand = (int)(Math.random()*(i+1));
Card temp = d[i];
d[i] = d[rand];
d[rand] = temp;
}
cUsed = 0;
}
  
  
  
public int cardsLeft() {
return 52 - cUsed;
}
  
public Deck() {
// Create unshuffled deck
d = new Card[52];
int cardsCreated = 0;
for ( int suit = 0; suit <= 3; suit++ ) {
for ( int value = 1; value <= 13; value++ ) {
d[cardsCreated] = new Card(value,suit);
cardsCreated++;
}
}
cUsed = 0;
}
public Card dealCard() {
if (cUsed == 52)
shuffle();
cUsed++;
return d[cUsed - 1];
}
}

class Card {

//suits
public final static int SPADES = 0,HEARTS = 1,DIAMONDS = 2,CLUBS = 3;
//face cards
public final static int ACE = 1,JACK = 11,QUEEN = 12,KING = 13;
  
private final int suit;
private final int val;

public Card(int theValue, int theSuit) {
//constructing a card
val = theValue;
suit = theSuit;
}
public int getSuit() {
return suit;
}
public int getValue() {
return val;
}
  
public String getSuitAsString() {
switch ( suit ) {
case SPADES:   
return "Spades";
case HEARTS:   
return "Hearts";
case DIAMONDS:
return "Diamonds";
case CLUBS:
return "Clubs";
default:   
return "??";
}
}
  
public String getValueAsString() {
// Return a String representing the card's val.
// If the card's val is invalid, "??" is returned.
switch ( val ) {
case 1:   
return "Ace";
case 2:   
return "2";
case 3:   
return "3";
case 4:   
return "4";
case 5:   
return "5";
case 6:   
return "6";
case 7:   
return "7";
case 8:   
return "8";
case 9:   
return "9";
case 10:
return "10";
case 11:
return "Jack";
case 12:
return "Queen";
case 13:
return "King";
default:
return "??";
}
}
public String toString() {
return getValueAsString() + " of " + getSuitAsString();
}
}

class Hand {

private Vector h; // The cards in the h.
public Hand() {
h = new Vector();
}

public void clear() {
h.removeAllElements();
}

public void addCard(Card c) {
if (c != null)
h.addElement(c);
}

public void removeCard(Card c) {
h.removeElement(c);
}

public void removeCard(int position) {
if (position >= 0 && position < h.size())
h.removeElementAt(position);
}

public int getCardCount() {
return h.size();
}

public Card getCard(int position) {
if (position >= 0 && position < h.size())
return (Card)h.elementAt(position);
else
return null;
}

public void sortBySuit() {
Vector newH = new Vector();
while (h.size() > 0) {
int pos = 0;
Card c = (Card)h.elementAt(0);
for (int i = 1; i < h.size(); i++) {
Card c1 = (Card)h.elementAt(i);
if ( c1.getSuit() < c.getSuit() ||
(c1.getSuit() == c.getSuit() && c1.getValue() < c.getValue()) ) {
pos = i;
c = c1;
}
}
h.removeElementAt(pos);
newH.addElement(c);
}
h = newH;
}

public void sortByValue() {
Vector newH = new Vector();
while (h.size() > 0) {
int pos = 0;
Card c = (Card)h.elementAt(0);
for (int i = 1; i < h.size(); i++) {
Card c1 = (Card)h.elementAt(i);
if ( c1.getValue() < c.getValue() ||
(c1.getValue() == c.getValue() && c1.getSuit() < c.getSuit()) ) {
pos = i;
c = c1;
}
}
h.removeElementAt(pos);
newH.addElement(c);
}
h = newH;
}
public int getValue() {
  
int val;   
boolean ace;
int cards;   

val = 0;
ace = false;
cards = getCardCount();

for ( int i = 0; i < cards; i++ ) {

Card card;
int cardVal;
card = getCard(i);
cardVal = card.getValue();
if (cardVal > 10) {
cardVal = 10;
}
if (cardVal == 1) {
ace = true;   
}
val = val + cardVal;
}

if ( ace == true && val + 10 <= 21 )
val = val + 10;

return val;
}
}

public class BlackJackHand {

public static void main(String[] args) {
//creating variables
int cP,cD;
Deck d; // A deck of cards.
Card card; // A card dealt from the deck.
Hand handD; //Dealer hand.
Hand handP; // Player Hand.
int cardInHand; // Number or cards .
String flag = "hit"; //to continue.
// Create the d.
d = new Deck();
Scanner sc = new Scanner(System.in);
d.shuffle();
handP = new Hand();
cardInHand = 1;
System.out.println();
card = d.dealCard();
handP.addCard(card);
  
handD = new Hand();
card = d.dealCard();
handD.addCard(card);
  
System.out.println("\nDealer's Card : " + handD.getCard(0));
while (flag.equalsIgnoreCase("hit")) {
card = d.dealCard();
handP.addCard(card);
cardInHand++;
  
  
System.out.println("Player's Hand contains:");
for (int i = 0; i < cardInHand; i++) {
System.out.println(" " + handP.getCard(i));
}
System.out.println("Value of Player's hand is " + handP.getValue());
if (handP.getValue() > 21) {
System.out.println("Sorry! You Busted Game Over");
return;
} else {
if(cardInHand >= 5){
System.out.println("Five card Charlie.");
return;
}else{
System.out.println("\n");
System.out.println("Do you want to hit or stand?");
flag = sc.nextLine();
while (!(flag.equalsIgnoreCase("hit") || flag.equalsIgnoreCase("stand"))) {
System.out.println("Invalid Choice. Please Choose again :");
flag = sc.nextLine();
}}
}
  
}
  
cardInHand=1;
System.out.println("Now Dealer Turn");
while (handP.getValue() >= handD.getValue()) {
card = d.dealCard();
handD.addCard(card);
cardInHand++;
System.out.println("Hand contains:");
for (int i = 0; i < cardInHand; i++) {

System.out.println(" " + handD.getCard(i));
}
System.out.println("Value of hand is " + handD.getValue());
//17 value as point 4 says
if(handD.getValue() >= 17 && handD.getValue() <= 21 )
{
System.out.println("Value of Player's hand is " + handP.getValue());
System.out.println("Value of Dealer's hand is " + handD.getValue());
//closest to 21 wins
cP = 21 - handP.getValue();
cD = 21 - handD.getValue();
if(cP>cD){
System.out.println("Dealer won.");
}
else
if(cP < cD)
{
System.out.println("Player won.");
}
else
{
System.out.println("It's a TIE.");
}
return;
}
if (handD.getValue() > 21) {
System.out.println("Dealer Lost the game and Busted!.");
return;
}
}
  
sc.close();
}

}

Output