🔥 Java Programming: Solution to Programming Exercise

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Eclipse IDE for Java Developers comes with native Maven support. Ah! I see, now got that. Delete the projects from your workspace and also.


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smotri-umor.fun Authors: Lewis, Chase, Coleman // // Provides a graphical user interface for a blackjack game // using the BlackJack class to provide the.


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smotri-umor.fun Authors: Lewis, Chase, Coleman // // Provides a graphical user interface for a blackjack game // using the BlackJack class to provide the.


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The user should see all the dealer's cards at this point. To make things interesting, give the user dollars, and let the user make bets on the game. The dealer simply draws cards in a loop as long as the value of dealerHand is 16 or less. Since the Blackjack game will take place in a subroutine, we need some way for the main routine to find out whether the user won. We better make sure that the user's bet is a reasonable amount, that is, something between 0 and the amount of money the user has. The function call userHand. If the user Stands, the game will end, but first the dealer gets a chance to draw cards. The exercise says that the subroutine should be a function that returns a boolean value with this information. The subroutine should return a boolean value to indicate whether the user wins the game or not. Write a main program that lets the user play several games of Blackjack. Otherwise, the user wins. We can do this in one step, if we want. You should first write a subroutine in which the user plays one game. We can add the card to a hand with the addCard instance method from the Hand class. Of course, a lot of output statements have to be added to the algorithm to keep the user informed about what is going on. For example, to deal two cards into each hand, we just have to say. In the loop, if the value of userHand goes over 21, then the whole subroutine ends. With these refinements, the algorithm becomes. Return true if the user wins, false if the dealer wins. The game goes like this. Then, the user plays Blackjack games until the user runs out of money or until the user wants to quit. Things are a little complicated because the game can end at various points along the way. The last step listed here expands to a loop that ends when the user inputs a valid response, 'H' or 'S'. When this happens, the subroutine ends immediately, and any remaining steps in the algorithm are skipped. The cards are numbered from 0 to userHand. Otherwise, if the dealer's total is greater than or equal to the user's total, then the dealer wins. The user gets to decide again whether to Hit or Stand. The game will be a simplified version of Blackjack as it is played in a casino. If the dealer's hand has a value of 21 at this point, then the dealer wins. Of course, to produce code like this, you have to make sure that you are familiar with the methods in the classes that you are using. Here is an applet that simulates the program you are supposed to write. If deck refers to the object of type Deck , then the function call deck. Although there are many other details to get right, it's mostly routine from here on. Otherwise, if the user has 21, then the user wins. All the user's cards are dealt face up. I encourage you to read the entire program below and make sure that you understand it.{/INSERTKEYS}{/PARAGRAPH} The loop ends when the user wants to "stand". The general object in Blackjack is to get a hand of cards whose value is as close to 21 as possible, without going over. Fortunately, the exercise gives what amounts to a fairly detailed outline of the algorithm. If the user wins, add an amount equal to the bet to the user's money. End the program when the user wants to quit or when she runs out of money. One point of coding is the question of how to deal a card to the user or to the dealer. In outline, the game goes like this: Create and shuffle a deck of cards Create two BlackjackHands, userHand and dealerHand Deal two cards into each hand Check if dealer has blackjack if so, game ends Check if user has blackjack if so, game ends User draws cards if user goes over 21, game ends Dealer draws cards Check for winner The last three steps need to be expanded, again using the information stated in the exercise. If the user loses, subtract the bet from the user's money. Let's start by designing the main program. To avoid having an overabundance of variables in your subroutine, remember that a function call such as userHand. This is called a "Blackjack". {PARAGRAPH}{INSERTKEYS}Exercise 5. Note that the dealer wins on a tie, so if both players have Blackjack, then the dealer wins. Of course, the major part of the problem is to write the playBlackjack routine. We need variables to represent the amount of money that the user has and the amount that the user bets on a given game. In this phase, the user sees her own cards and sees one of the dealer's two cards. If the user Hits, there is a possibility that the user will go over In that case, the game is over and the user loses. For example, I expanded the step where it says "Ask whether user wants to hit or stand" to. Again, if the value goes over 21, the whole subroutine ends. Two notes on programming: At any point in the subroutine, as soon as you know who the winner is, you can say " return true ;" or " return false ;" to end the subroutine and return to the main program. Sorry, your browser doesn't support Java. We could ask the user after each game whether she wants to continue. In the last step, we determine the winner by comparing the values of the two hands. But instead of this, I just tell the user to enter a bet amount of 0 if she wants to quit. If not, then the process continues. So, the algorithm can be refined. The rule is that as long as the value of the dealer's hand is less than or equal to 16, the dealer Hits that is, takes another card. This is the longest and most complex program that has come up so far in the exercises. This is ready to be translated into Java. Then, we can write an algorithm for the main program:. First, two cards are dealt into each player's hand. The first step uses a for loop. In a casino, the dealer deals himself one card face up and one card face down. Now, if the game has not ended, the user gets a chance to add some cards to her hand. Let money and bet be variables of type int to represent these quantities. The program needs an object of class Deck and two objects of type BlackjackHand , one for the dealer and one for the user. The dealer only follows rules, without any choice. The user can draw several cards, so we need a loop. Now, the winner can be determined: If the dealer has gone over 21, the user wins. We should record the return value and test it to see whether the user won. The computer will act as the dealer. The user makes a decision whether to "Hit", which means to add another card to her hand, or to "Stand", which means to stop taking cards. It would probably be worthwhile to play it for a while to see how it works. As in the previous exercise, your program will need the classes defined in Card. The other point that needs some refinement is inputting the user's bet.