Blackjack java classes
Java simple BlackJack, REVIEWPOKER.INFOinterException. in some code to write a simple blackjack program. There are three classes I have a REVIEWPOKER.INFO Exercise Write a Blackjack applet that lets the user play a game of Blackjack, Your program will need the classes defined in REVIEWPOKER.INFO, REVIEWPOKER.INFO I am rather new to this so bare with me! I am currenlty creating a BlackJack game in Java and attempting to use the MVC design when creating it. I have so far created the following classes: Card.
At this point, the first time I wrote the game, I just set gameInProgress to true, to record the fact that the state of the game has changed. We also need a deck and a boolean-valued instance variable, gameInProgress , to keep track of the two basic states of the game: The deck can be shuffled, and cards can be dealt from the deck. To make things interesting, give the user dollars, and let the user make bets on the game. There are too many magic numbers in the code. It makes your code more readable, and especially more reusable.
Join Stack Overflow to learn, share knowledge, and build your career. My first Question was resolved, however, the function getValue always returns There are three classes I have defined, a Card Class, a Hand Class which is an array of Cards and some other values and a Deck class which is also an array of Cards.
In the Hand class I have a method that adds up all the values of the cards, and whenever I run my code, I get a java. NullPointerException, and the console points to my this "addHand" method:.
I think it is because some of the values in Cards are null. But the "counter" should not let any of them get added.
I'll include the rest of the Hand Class, as well as the Card Class. You may also want to add a check to your addCard Card method so that null cards cannot be added. It depends on call to addCard method. This method is setting card to your cards variable. Suppose you called addCard 3 times, then 0, 1 and 2 iteration of the loop in addHand will be ok but iteration 3 will through exception because cards is null.
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There are only two hard things in computer science: The mind is a strange and wonderful thing. I'm not sure that it will ever be able to figure itself out, everything else, maybe. From the atom to the universe, everything, except itself. I wrote the java code in English. Please don't laugh at my very-beginner simple code or don't laugh to hard I'm trying to learn java on my own.
The code does work. If I would make one method to generate a card, should I use an other method to determine the value and one to determine if it's a ace or not? Or do I make it more difficult than I should by using multiple methods for a simple game? Making a simple blackjack game. I'm trying to make a very simple blackjack game to play against the computer.
I now made it, without using GUI in one class. It's quite big and now I want to try to make it possible to split. However, I would like to make methods like "drawcard". Now I use a switch for this and call the "drawcard" method in the main class. But, if I place my switch drawcard in an method in an other class, I can only return 1 variable, and I want to return more the name of the card, the points you get by it and if it's a ace or not. I just started with learning Java so sorry if I don't use the correct terms.
I can copy the code I have now, but then I have to translate some names of variables and text. Could I just copy the Javacode in the message? Could anybody give me some advise if I should use more classes or not?
Maybe I just have to learn more. With a proper OO design, you should only have to return one thing. You should be able to create a 'card' class that would hold the rank A-K and a suit. I would NOT have it return a value, since the value is not a property of the card, but of the rules of the game of blackjack. Welcome to JavaRanch, Sanne! I agree with Fred. It's probably easiest if you create a Card class.
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