Question

package compstore;

public class Desktop{
    private String brand;
    private float price;

    public Desktop(String brand, float price) {
        this.brand = brand;
        this.price = price;
    }

    public String getBrand() {        return brand;     }

    public float getPrice() {        return price;    }

}

package compstore;

public class DeskTopDeals{

    // assume proper variables and other methods are here

    public void dealOfTheDay(Desktop[] items, int numItems){

        /****************************
         *  your code would go here *
         ****************************/

    }
}

Given the above Desktop class, write code that should go in the area marked * your code would go here * to complete the “dealOfTheDay(Desktop[] items, int numItems)” method. The output should be printed to the console (screen). There are numItems Desktops in the array Desktop[] items. These items are in locations 0 to numItems - 1 of the array.

Each desktop item should have its brand and price output on a single line. There will be marks for properly right justifying the price and outputting two decimals. As you are printing the Desktop objects, you should keep track of the Desktop object with the lowest price. At the end print the brand name followed by the price, a shipping surcharge of 15% and the total price. For example, if the Desktop array had 3 Desktops, a SkyTech for $300, a Dell for $400, and HP for $500, we would get the following output.

Current Deals:

SkyTech 300.00

Dell 400.00

HP           500.00

The deal of the day is SkyTech.

Price: $300.00 Shipping: $45.00 Total: $ 345.00

Answer 1

Program: In this program, we implement the method dealOfTheDay() method in which we display all current deals and then the deal of the day. We format the output using System.out.printf() method and print it on console. To run the method we created the main() method as well in DeskTopDeals class.

Below is the implementation:

Desktop.java:

Code:

package compstore;

public class Desktop {

    // Instance variables
    private String brand;
    private float price;

    // Constructor
    public Desktop(String brand, float price) {
        this.brand = brand;
        this.price = price;
    }

    // Getters
    public String getBrand() {
        return brand;
    }

    public float getPrice() {
        return price;
    }
}

DeskTopDeals.java:

Code:

package compstore;

public class DeskTopDeals {
    // assume proper variables and other methods are here

    // Main method
    public static void main(String[] args) {
        // Create a variable to store array size
        int numItems = 3;

        // Create an array of Desktop type items
        Desktop[] items = new Desktop[numItems];

        // Pass values to items - brand name and brand price
        items[0] = new Desktop("SkyTech", 300);
        items[1] = new Desktop("Dell", 400);
        items[2] = new Desktop("HP", 500);

        // Create an object of this class
        DeskTopDeals deskTopDeals = new DeskTopDeals();

        // Call dealOfTheDay method, pass items and size
        deskTopDeals.dealOfTheDay(items,numItems);

    }

    public void dealOfTheDay(Desktop[] items, int numItems) {

        /****************************
         *  your code would go here *
         ****************************/

        // Create a Desktop class object to store the deal of the day
        Desktop dealOfTheDay = new Desktop("", 0);

        // Create a min variable to compare prices of brands
        float min = Float.MAX_VALUE;


        System.out.println("Current Deals:");

        // Traverse the items array
        for (int i = 0; i < numItems; i++) {

            // Display items
            System.out.printf("%s%10.2f\n",items[i].getBrand(),items[i].getPrice());

            // Check if current price of item is less than min
            if (min > items[i].getPrice()) {
                min = items[i].getPrice();
                dealOfTheDay = items[i];
            }
        }

        // Calculate tax
        float tax = (dealOfTheDay.getPrice() * 15) / 100;

        // Calculate total price of the product by adding price of item with tax
        float total = dealOfTheDay.getPrice() + tax;

        // Print the answer to console
        System.out.println("The deal of the day is " + dealOfTheDay.getBrand());
        System.out.printf("Prices: $%.2f Shipping: $%.2f Total: $%.2f\n", dealOfTheDay.getPrice(), tax, total);
    }
}

Output:

#Please ask for any doubts. Thanks.