Question

public class CashRegisterPartTwo {

    // TODO: Do not modify the main method.
    // You can add comments, but the main method should look exactly like this
    // when you submit your project.
    public static void main(String[] args) {

        runTransaction();

    }

    // TODO: Define the runTranscation method.
    // runTransaction runs the cash register process from start to finish. However,
    // it will not contain ALL Of the code. You are going to have to delegate some of
    // its functionality to the other three methods: computePreTaxTotal, computeTax,
    // and displayTransactionSummary. The runTransaction method should call these three
    // methods at some point to perform their purpose.
    public static void runTransaction() {

    }

    // TODO: Define the computePreTaxTotal method.
    // computePreTaxTotal will calculate and return the pre-tax total based on the number of packages ordered,
    // the number of cheesecakes per package, and the price of each cheesecake.
    public static double computePreTaxTotal(int numPackagesOrdered, int packageQuantity, double price) {
        // Your code goes here.
    }

    // TODO: Define the computeTax method.
    // computeTax will calculate and return the special tax associated with the sale.
    // Within this method, you will need to figure out the normal in order to compute
    // the special tax. You don't need a separate method for calculating the normal tax.
    public static double computeTax(double preTaxTotal) {
        // Your code goes here.
    }

    // TODO: Define the displayTransactionSummary method.
    // displayTransactionSummary will print the summary of the transaction to the console. The values displayed
    // are the same as the ones required in Project 1 Part 3 except for the normal tax. You do not
    // need to display the normal tax associated with the sale.
    public static void displayTransactionSummary(int numPackagesOrdered, double price, double preTaxTotal,
                                                 double tax, double totalCost) {
        // Your code goes here.
    }
}

How to do these step in this part one of the code :

import java.util.Scanner;

public class CashRegisterPartTwo {
    public static void main(String[] args) {
        // defining constants for each unit measurement
        Scanner sc = new Scanner(System.in);

        final double CHEESECAKE_UNIT_PRICE = 28.60;

        final int UNITS_PER_PACKAGE = 23;

        final double TAX_RATE = 0.1575;


        // finding price per package

        double price_per_package = CHEESECAKE_UNIT_PRICE * UNITS_PER_PACKAGE;

        // displaying basic details

        System.out.printf("Unit price of a cheesecake: $%.2f\n",

                CHEESECAKE_UNIT_PRICE);

        System.out.printf("Number of cheesecakes per package: %d\n",

                UNITS_PER_PACKAGE);

        System.out.printf("Price per package: $%.2f\n", price_per_package);

        // asking, reading name and num packages

        System.out.print("\nWhat is your name? ");

        String name = sc.nextLine();

        System.out.print("How many packages do you want? ");

        int numPackages = sc.nextInt();

        // finding pre tax total, normal tax, special tax and total

        double pre_tax_total = price_per_package * numPackages;

        double normal_tax = pre_tax_total * TAX_RATE;

        double special_tax = (normal_tax / 3.32) + 3.91;

        double total_cost = pre_tax_total + special_tax;

        // note: normal tax is excluded from the total cost

        //displaying every details in proper format

        System.out.printf("\nNumber of packages ordered: %d\n", numPackages);

        System.out.printf("Price of each package: $%.2f\n", price_per_package);

        System.out.printf("Pre tax total: $%.2f\n", pre_tax_total);

        System.out.printf("Normal tax (%.2f%%): $%.2f\n", TAX_RATE * 100,

                normal_tax);

        System.out.printf("Special tax: $%.2f\n", special_tax);

        System.out.printf("Total cost of the purchase: $%.2f\n", total_cost);


        //displaying a personalized message, modify this as needed.

        System.out.printf("\nThank you for the purchase, %s. "

                        + "I think a bottle of Coca Cola would go well with this.\n",

                name);

}
}

Please if I can get help with this!

Answer 1

public class CashRegisterPartTwo {

    // TODO: Do not modify the main method.
    // You can add comments, but the main method should look exactly like this
    // when you submit your project.
    final double CHEESECAKE_UNIT_PRICE = 28.60;
    final int UNITS_PER_PACKAGE = 23;
    final double TAX_RATE = 0.1575;
    public static void main(String[] args) {
                runTransaction();
    }

    // TODO: Define the runTranscation method.
    // runTransaction runs the cash register process from start to finish. However,
    // it will not contain ALL Of the code. You are going to have to delegate some of
    // its functionality to the other three methods: computePreTaxTotal, computeTax,
    // and displayTransactionSummary. The runTransaction method should call these three
    // methods at some point to perform their purpose.
    public static void runTransaction() {
           Scanner sc = new Scanner(System.in);
        // finding price per package

        double price_per_package = CHEESECAKE_UNIT_PRICE * UNITS_PER_PACKAGE;


        // asking, reading name and num packages

        System.out.print("\nWhat is your name? ");

        String name = sc.nextLine();

        System.out.print("How many packages do you want? ");

         int numPackages = sc.nextInt();
         double pre_tax_total = computePreTaxTotal(numPackages,  UNITS_PER_PACKAGE, CHEESECAKE_UNIT_PRICE);
         double special_tax =computeTax(pre_tax_total);
         double total_cost = pre_tax_total + special_tax;
         displayTransactionSummary( numPackages,CHEESECAKE_UNIT_PRICE,pre_tax_total,
                                                  special_tax, total_cost);
      
    }

    // TODO: Define the computePreTaxTotal method.
    // computePreTaxTotal will calculate and return the pre-tax total based on the number of packages ordered,
    // the number of cheesecakes per package, and the price of each cheesecake.
    public static double computePreTaxTotal(int numPackagesOrdered, int packageQuantity, double price) {
        // Your code goes here.
        double pre_tax_total = numPackagesOrdered*packageQuantity*price;
        return pre_tax_total;
        

    }

    // TODO: Define the computeTax method.
    // computeTax will calculate and return the special tax associated with the sale.
    // Within this method, you will need to figure out the normal in order to compute
    // the special tax. You don't need a separate method for calculating the normal tax.
    public static double computeTax(double preTaxTotal) {
        // Your code goes here.
        double normal_tax = preTaxTotal * TAX_RATE;
        double special_tax = (normal_tax / 3.32) + 3.91;
        return special_tax;
        
    }

    // TODO: Define the displayTransactionSummary method.
    // displayTransactionSummary will print the summary of the transaction to the console. The values displayed
    // are the same as the ones required in Project 1 Part 3 except for the normal tax. You do not
    // need to display the normal tax associated with the sale.
    public static void displayTransactionSummary(int numPackagesOrdered, double price, double preTaxTotal,
                                                 double tax, double totalCost) {
        // Your code goes here.
          System.out.printf("Unit price of a cheesecake: $%.2f\n",price);
          System.out.printf("Number of cheesecakes per package: %d\n",UNITS_PER_PACKAGE);
          System.out.printf("Price per package: $%.2f\n", price_per_package);
          System.out.printf("\nNumber of packages ordered: %d\n", numPackagesOrdered);
          System.out.printf("Pre tax total: $%.2f\n", preTaxTotal);
          System.out.printf("Special tax: $%.2f\n", tax);
          System.out.printf("Total cost of the purchase: $%.2f\n", totalCost);

        

    }
}