Question

Java programming language!

1. Tossing Coins for a Dollar

For this assignment you will create a game program using the Coin class from Programming Challenge 12. The program should have three instances of the Coin class: one representing a quarter, one representing a dime, and one representing a nickel.

When the game begins, your starting balance is $0. During each round of the game, the program will toss the simulated coins. When a coin is tossed, the value of the coin is added to your balance if it lands heads-up. For example, if the quarter lands heads-up, 25 cents is added to your balance. Nothing is added to your balance for coins that land tails-up. The game is over when your balance reaches one dollar or more. If your balance is exactly one dollar, you win the game. You lose if your balance exceeds one dollar.  

Answer 1

Here is the completed code for Coin.java and Simulation.java. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

// Coin.java (since you did not provide it, I created one myself)

// representing a coin with two sides - heads and tails

public class Coin {

    private String sideUp;

    public Coin() {

        toss();

    }

   

    //method to toss the coin and update sideUp

    public void toss() {

        int randNum = (int) (Math.random() * 2);

        if (randNum == 1) {

             sideUp = "heads";

        } else if (randNum == 0) {

             sideUp = "tails";

        }

    }

   

    //returns the sideUp

    public String getSideUp() {

        return sideUp;

    }

}

// Simulation.java

public class Simulation {

    public static void main(String[] args) {

        // winning score

        double winningScore = 1.00;

        // three coins for representing a quarter, dime and nickel

        Coin quarter = new Coin();

        Coin dime = new Coin();

        Coin nickel = new Coin();

        // starting balance

        double balance = 0;

        // round number

        int round = 1;

        // looping until balance is not less than winningScore

        while (balance < winningScore) {

             // tossing coins

            quarter.toss();

             dime.toss();

             nickel.toss();

             // displaying coins and their sideUp

             System.out.println("Quarter: " + quarter.getSideUp() + ", Dime: "

                     + dime.getSideUp() + ", Nickel: " + nickel.getSideUp());

             // if quarter is "heads", adding 0.25 to balance

             if (quarter.getSideUp().equalsIgnoreCase("heads")) {

                 balance += 0.25;

             }

             // if dime is "heads", adding 0.10 to balance

             if (dime.getSideUp().equalsIgnoreCase("heads")) {

                 balance += 0.10;

             }

             // if nickel is "heads", adding 0.05 to balance

             if (nickel.getSideUp().equalsIgnoreCase("heads")) {

                 balance += 0.05;

             }

             // displaying balance after current round

             System.out.printf("Balance after round#" + round + ": $%.2f\n",

                     balance);

             // updating round

             round++;

        }

        // after the loop, if balance is equal to winningScore, player won, else

        // lost

        if (balance == winningScore) {

             System.out.println("You won!");

        } else {

             System.out.println("You lost!");

        }

    }

}

/*OUTPUT1*/

Quarter: heads, Dime: heads, Nickel: heads

Balance after round#1: $0.40

Quarter: heads, Dime: tails, Nickel: heads

Balance after round#2: $0.70

Quarter: heads, Dime: tails, Nickel: heads

Balance after round#3: $1.00

You won!

/*OUTPUT2*/

Quarter: tails, Dime: heads, Nickel: heads

Balance after round#1: $0.15

Quarter: heads, Dime: tails, Nickel: heads

Balance after round#2: $0.45

Quarter: tails, Dime: heads, Nickel: tails

Balance after round#3: $0.55

Quarter: tails, Dime: tails, Nickel: tails

Balance after round#4: $0.55

Quarter: tails, Dime: tails, Nickel: tails

Balance after round#5: $0.55

Quarter: heads, Dime: heads, Nickel: heads

Balance after round#6: $0.95

Quarter: heads, Dime: heads, Nickel: heads

Balance after round#7: $1.35

You lost!