[JAVA]BlackJack Code Review(Beginner)

[anipak]

Hello!

I am very new to Java and programming theory and desperately trying to improve my knowledge. This is the first program I've made without help and really would appreciate some feedback. I know there must be 1,000,000 better ways to do what I did.

Notes:

- I want to move away from public static void main(String[] args) { } programming. How could I achieve this program using methods and OOP?
- I am aware that the Ace should not just be = 11 and give the user the chance to dictate it's value but implementing that would not of taught me anything new.
- The way in which I calculated the dealers & users card value is atrocious, especially because I had to re-iterate it constantly. This is the biggest problem I want to fix.

Images of console to give you an idea two runs:


import java.util.*;


public class BlackJack {


public static void main(String[] args) {

/*
* Scanner && User Variables
*/
Scanner kb = new Scanner(System.in);
int usersDecision = 0;

/*
* Users && Dealers Value Variables
*/
int usersValue = 0;
int dealersValue = 0;

/*
* Suit && Rank Arrays
*/
String[] card = { "2", "3", "4", "5", "6", "7", "8", "9", "10",
"Jack", "Queen", "King", "Ace"};
/*
* Array Lists Users Cards && Dealers Cards
*/
ArrayList<String> usersCards = new ArrayList<String>();
ArrayList<String> dealersCards = new ArrayList<String>();


/*
* GENERATE DEALERS FIRST CARD
*/
for (int i = 0; i <= 0; i++) {
int randomGenNumber = (int) (Math.random()*13);

dealersCards.add(card[randomGenNumber]);
}
/*
* Print Dealers First Card
*/
System.out.println("The Dealer Was Dealt: " + dealersCards);


/*
* Deal Users Two Cards
*/
for (int i = 0; i <= 1; i++) {

int randomGenNumber = (int) (Math.random()*13);

usersCards.add(card[randomGenNumber]);

}

/*
* Print Users Two Cards
*/
System.out.println("The User Was Dealt: " + usersCards);

/*
* Check For BlackJack
*/
if(usersCards.contains("Ace")) {
if(usersCards.contains("King") || usersCards.contains("Queen") || usersCards.contains("Jack") || usersCards.contains("10")){
System.out.println("You've Got BlackJack! Congratulations, You Win!");
System.exit(0);
} else {
System.out.println("You Did Not Get BlackJack!\n[1] Twist\n[2] Stick");
}
} else {
System.out.println("You Did Not Get BlackJack! :( \n[1] Twist\n[2] Stick");
}


/*
* Take Users Decision
* Check Users Decision
* While Loop
* Switch Statement For Users Decision
*/

int x = 0;
while(x==0) {

usersDecision = kb.nextInt();

switch (usersDecision) {
case 1:
System.out.println("You've Twisted - Your Cards: " + usersCards);
System.out.println("You've Twisted - Additional Card Dealt");
x = 0;

/*
* WHILE Twisting = True
* Generate New Cards
* Check Value of Cards
* Bust/Twist/Stick For User
*/
for (int i = 0; i <= 0; i++) {
int randomGenNumber = (int) (Math.random()*13);

usersCards.add(card[randomGenNumber]);
}

System.out.println(usersCards + "\n");

/*
* Generate Users Card Value
*/
usersValue = 0;

for(int i = 0; i < usersCards.size(); i++) {
if(usersCards.get(i).equals("2")) {
usersValue += 2;
} else if(usersCards.get(i).equals("3")) {
usersValue += 3;
} else if(usersCards.get(i).equals("4")) {
usersValue += 4;
} else if(usersCards.get(i).equals("5")) {
usersValue += 5;
} else if(usersCards.get(i).equals("6")) {
usersValue += 6;
} else if(usersCards.get(i).equals("7")) {
usersValue += 7;
} else if(usersCards.get(i).equals("8")) {
usersValue += 8;
} else if(usersCards.get(i).equals("9")) {
usersValue += 9;
} else if(usersCards.get(i).equals("10")) {
usersValue += 10;
} else if(usersCards.get(i).equals("Jack")) {
usersValue += 10;
} else if(usersCards.get(i).equals("Queen")) {
usersValue += 10;
} else if(usersCards.get(i).equals("King")) {
usersValue += 10;
} else if(usersCards.get(i).equals("Ace")) {
usersValue += 11;
}
}
/*
* Print Users Value
*/
System.out.println("Users Cards Value: " + usersValue + "");

if(usersValue != 21 && usersValue <=21){
System.out.println("You Did Not Get BlackJack!\n[1] Twist\n[2] Stick");

} else if (usersValue == 21) {
System.out.println("You Got BlackJack! Congratulations!");
} else if (usersValue > 21) {
System.out.println("You've Bust! You Lose!");
System.exit(0);
}

break;

case 2:
System.out.println("You've Stuck - Your Cards: " + usersCards +"\n");
x = 1;
/*
* For Loop
* Generate Users Card Value
*/
usersValue = 0;

for(int i = 0; i <usersCards.size(); i++) {
if(usersCards.get(i).equals("2")) {
usersValue += 2;
} else if(usersCards.get(i).equals("3")) {
usersValue += 3;
} else if(usersCards.get(i).equals("4")) {
usersValue += 4;
} else if(usersCards.get(i).equals("5")) {
usersValue += 5;
} else if(usersCards.get(i).equals("6")) {
usersValue += 6;
} else if(usersCards.get(i).equals("7")) {
usersValue += 7;
} else if(usersCards.get(i).equals("8")) {
usersValue += 8;
} else if(usersCards.get(i).equals("9")) {
usersValue += 9;
} else if(usersCards.get(i).equals("10")) {
usersValue += 10;
} else if(usersCards.get(i).equals("Jack")) {
usersValue += 10;
} else if(usersCards.get(i).equals("Queen")) {
usersValue += 10;
} else if(usersCards.get(i).equals("King")) {
usersValue += 10;
} else if(usersCards.get(i).equals("Ace")) {
usersValue += 11;
}
}
/*
* Dealers Second Card
* &&
* Check Dealers Value && Take Action
*/
System.out.println("Dealing Dealers Second Card!");

for (int i = 0; i <= 0; i++) {
int randomGenNumber = (int) (Math.random()*13);

dealersCards.add(card[randomGenNumber]);
}
System.out.println(dealersCards + "\n");

/*
* For Loop
* Generate Dealers Card Value
*/
dealersValue = 0;

for(int i = 0; i < dealersCards.size(); i++) {
if(dealersCards.get(i).equals("2")) {
dealersValue += 2;
} else if(dealersCards.get(i).equals("3")) {
dealersValue += 3;
} else if(dealersCards.get(i).equals("4")) {
dealersValue += 4;
} else if(dealersCards.get(i).equals("5")) {
dealersValue += 5;
} else if(dealersCards.get(i).equals("6")) {
dealersValue += 6;
} else if(dealersCards.get(i).equals("7")) {
dealersValue += 7;
} else if(dealersCards.get(i).equals("8")) {
dealersValue += 8;
} else if(dealersCards.get(i).equals("9")) {
dealersValue += 9;
} else if(dealersCards.get(i).equals("10")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Jack")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Queen")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("King")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Ace")) {
dealersValue += 11;
}
}
/*
* Print Dealers Value
*/
System.out.println("Dealers Cards Value: " + dealersValue + "");

/*
* Take Action On Dealers Value
*/
int y = 0;
while(y==0) {

dealersValue = 0;
for(int i = 0; i < dealersCards.size(); i++) {
if(dealersCards.get(i).equals("2")) {
dealersValue += 2;
} else if(dealersCards.get(i).equals("3")) {
dealersValue += 3;
} else if(dealersCards.get(i).equals("4")) {
dealersValue += 4;
} else if(dealersCards.get(i).equals("5")) {
dealersValue += 5;
} else if(dealersCards.get(i).equals("6")) {
dealersValue += 6;
} else if(dealersCards.get(i).equals("7")) {
dealersValue += 7;
} else if(dealersCards.get(i).equals("8")) {
dealersValue += 8;
} else if(dealersCards.get(i).equals("9")) {
dealersValue += 9;
} else if(dealersCards.get(i).equals("10")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Jack")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Queen")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("King")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Ace")) {
dealersValue += 11;
}
}
/*
* If Dealers Value:
* <=16 == 17 < 17 == 21 > 21
*
*/
if(dealersValue <= 16) {
int randomGenNumber = (int) (Math.random()*13);
dealersCards.add(card[randomGenNumber]);
System.out.println("Dealer Has Less Than 17 - Taking Another Card\n");
System.out.println("Dealers Cards: " + dealersCards);
dealersValue = 0;

for(int i = 0; i < dealersCards.size(); i++) {
if(dealersCards.get(i).equals("2")) {
dealersValue += 2;
} else if(dealersCards.get(i).equals("3")) {
dealersValue += 3;
} else if(dealersCards.get(i).equals("4")) {
dealersValue += 4;
} else if(dealersCards.get(i).equals("5")) {
dealersValue += 5;
} else if(dealersCards.get(i).equals("6")) {
dealersValue += 6;
} else if(dealersCards.get(i).equals("7")) {
dealersValue += 7;
} else if(dealersCards.get(i).equals("8")) {
dealersValue += 8;
} else if(dealersCards.get(i).equals("9")) {
dealersValue += 9;
} else if(dealersCards.get(i).equals("10")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Jack")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Queen")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("King")) {
dealersValue += 10;
} else if(dealersCards.get(i).equals("Ace")) {
dealersValue += 11;
}

}
System.out.println("Dealers Cards Value: " + dealersValue + "\n");
}

/*
* Checks dealersValue against usersValue
* Prints Response
*/
if(dealersValue == 17 ) {
System.out.println("Dealer Has 17 - Dealer Sticks\n");
y = 1;

if(usersValue < 17) {
System.out.println("You Have: " + usersValue + " You Lost");
} else if(usersValue == dealersValue) {
System.out.println("You Have: " + usersValue + " You Drew");
} else {
System.out.println("You Have: " + usersValue + " You Won!");
}
}

if(dealersValue > 17 && dealersValue < 21) {
System.out.println("Dealer Has: " + dealersValue + " Dealer Sticks\n" );
y = 1;

if(usersValue < 18) {
System.out.println("You Have: " + usersValue + " You Lost");
} else if(usersValue == dealersValue) {
System.out.println("You Have: " + usersValue + " You Drew");
} else {
System.out.println("You Have: " + usersValue + " You Won!");
}
}

if(dealersValue == 21) {
System.out.println("Dealer Has BlackJack\n");
y = 1;
if(usersValue == dealersValue) {
System.out.println("You Have: " + usersValue + " You Drew");
}
}

if(dealersValue > 21) {
System.out.println("Dealer Has Busted - You Win!");
y = 1;
}

}
break;
default:
System.out.println("Not A Valid Selection");
}

};
}
}



Any and all comments are appreciated, really want to get to grips with basic Java programming concepts.

Thanks for your time!