Question

NEED DONE IN AN HOUR

File 1 - HotTubLastname.java

• Write a class that will hold fields for the following:

• • The model of the hot tub
  • The hot tub’s feature package (can be Basic or Premium)
  • The hot tub’s length (in inches)
  • The hot tub’s width (in inches)
  • The hot tub’s depth (in inches)
• The class should also contain the following methods:
  • A constructor that doesn’t accept arguments
  • A constructor that accepts arguments for each field.
  • Appropriate accessor and mutator methods (i.e., setters and getters).
  • A method named getCapacity that accepts no arguments and calculates and returns the capacity (in gallons) of the hot tub.

The capacity of the hot tub can be calculated by using the following formula:

Capacity in gallons = (Length * Width * Depth) / 1728 * 4.8

• • A method named getPrice that accepts no arguments and calculates and returns the price of the hot tub based on the following table:

Hot Tub Capacity	Package	Cost Per Gallon
Less than 350 gallons	Basic	$5.00
Less than 350 gallons	Premium	$6.50
350 but not more than 500 gallons	Basic	$6.00
350 but not more than 500 gallons	Premium	$8.00
Over 500 gallons	Basic	$7.50
Over 500 gallons	Premium	$10.00

Price = Cost Per Gallon * Capacity

File 2 - DemoLastname.java

• Write a program that demonstrates the class and calculates the cost of hot tubs. The program should ask the user for the following:

• • The model of the hot tub
  • The hot tub’s feature package (can be Basic or Premium)
  • The hot tub’s length (in inches). The program should not accept a number less than 60 for the length.
  • The hot tub’s width (in inches). The program should not accept a number less than 60 for the width.
  • The hot tub’s depth (in inches). The program should not accept a number less than 30 for the depth.

• The program should prompt the user for all the data necessary to fully initialize the objects. IMPORTANT: Store your objects in a container that will automatically expand as objects are added.
• The program should continue allowing the user to input information until the user indicates to stop (see sample input on page 3). Note: The program should accept lower or upper case responses to this question.
• After the user indicates that they wish to stop, the program should output the information for each hot tub.
  • The capacity of the hot tub should be formatted to two decimal places.
  • The price of the hot tub should be formatted as currency to two decimal places and include a comma in the thousands place.
• After the program outputs the information for each hot tub, it should output the total cost of all of the hot tubs.
• The program should display the input and output as shown in the provided sample output (Note: this includes blank lines).

Answer 1

HotTubLastname.java file:

package hottub;

// HotTubLastname class
public class HotTubLastname {
    private String model;
    private String featurePackage;
    private Double length;
    private Double width;
    private Double depth;

    // non-parametrized constructor
    public HotTubLastname() {
    }

    // parametrized constructor
    public HotTubLastname(String model, String featurePackage, Double length, Double width, Double depth) {
        this.model = model;
        this.featurePackage = featurePackage;
        this.length = length;
        this.width = width;
        this.depth = depth;
    }

    // getters and setters
    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public String getFeaturePackage() {
        return featurePackage;
    }

    public void setFeaturePackage(String featurePackage) {
        this.featurePackage = featurePackage;
    }

    public Double getLength() {
        return length;
    }

    public void setLength(Double length) {
        this.length = length;
    }

    public Double getWidth() {
        return width;
    }

    public void setWidth(Double width) {
        this.width = width;
    }

    public Double getDepth() {
        return depth;
    }

    public void setDepth(Double depth) {
        this.depth = depth;
    }


    /**
     * Calculate area of the hot tub and return it
     * @return double
     */
    public Double getCapacity(){
        return Math.round(((length * width * depth)/(1728 * 4.8))*100)/100.0;
    }

    /**
     * calculate price of the hot tub and return it
     * @return double
     */
    public Double getPrice(){
        // check if featurePackage equals basic then calculate the price according to their capacity
        if(featurePackage.equalsIgnoreCase("basic")){
            if(getCapacity()<350){
                return getCapacity() * 5;
            }else if(getCapacity() < 500){
                return getCapacity() * 6;
            }else{
                return getCapacity() * 7.5;
            }
        }
        // else featurePackage equals premium so calculate the price according to their capacity
        else{
            if(getCapacity()<350){
                return getCapacity() * 6.5;
            }else if(getCapacity() < 500){
                return getCapacity() * 8;
            }else{
                return getCapacity() * 10;
            }
        }
    }
}

Screenshots of HotTubLastname.java file:

DemoLastname.java file:

package hottub;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class DemoLastname {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);

        // hotTubLastnames list which stores HotTubLastName
        List<HotTubLastname> hotTubLastnames = new ArrayList<>();

        // taking infinite while loop
        while(true){

            // taking input of model
            System.out.print("The model of the hot tub: ");
            String model = scanner.nextLine();

            // taking input of featurePackage
            System.out.print("The hot tub’s feature package (can be Basic or Premium): ");
            String featurePackage = scanner.nextLine();

            // asks for input of featurePackage until input is valid
            while(!featurePackage.equalsIgnoreCase("basic") && !featurePackage.equalsIgnoreCase("premium")){
                System.out.println("Invalid feature package.");
                System.out.print("The hot tub’s feature package (can be Basic or Premium): ");
                featurePackage = scanner.nextLine();
            }

            // taking input of length
            System.out.print("The hot tub’s length (in inches): ");
            double length = scanner.nextDouble();

            // asks for input of length until input is valid
            while(length<60){
                System.out.println("Invalid length.");
                System.out.print("The hot tub’s length (in inches): ");
                length = scanner.nextDouble();
            }

            // taking input of width
            System.out.print("The hot tub’s width (in inches): ");
            double width = scanner.nextDouble();

            // asks for input of width until input is valid
            while(width<60){
                System.out.println("Invalid width.");
                System.out.print("The hot tub’s width (in inches): ");
                width = scanner.nextDouble();
            }

            // taking input of depth
            System.out.print("The hot tub’s depth (in inches): ");
            double depth = scanner.nextDouble();

            // asks for input of depth until input is valid
            while(depth<30){
                System.out.println("Invalid depth.");
                System.out.print("The hot tub’s width (in inches): ");
                depth = scanner.nextDouble();
            }

            // creating an instance of HotTubLastname
            HotTubLastname hotTubLastname = new HotTubLastname(model, featurePackage, length, width, depth);

            // add hotTubLastname to hotTubLastnames list
            hotTubLastnames.add(hotTubLastname);

            System.out.print("Do you want to add more? y or n: ");
            scanner.nextLine();
            String yesNo = scanner.nextLine();

            // if yesNo equals n then break the while loop
            if(yesNo.equalsIgnoreCase("n")){
                break;
            }
        }
        // print the hot Tub's information
        System.out.println("\nHot Tub's Information\n");
        System.out.println(String.format("%-10s %-10s %-20s %-10s", "Model", "Package", "Capacity", "Price"));
        double totalPrice = 0;

        for(HotTubLastname hotTub : hotTubLastnames){
            // calculate capacity
            double capacity = hotTub.getCapacity();

            // calculate  price
            double price = Math.round(hotTub.getPrice()*100)/100.0;
            // comma separated price
            String formattedPrice = String.format("%,.2f",price);

            // calculate Total price
            totalPrice = totalPrice + price;
            System.out.println(String.format("%-10s %-10s %-20s %-10s", hotTub.getModel(), hotTub.getFeaturePackage(), capacity+" gallons", "$"+formattedPrice));
        }
        // print the total cost
        System.out.println(String.format("\nTotal Cost: $%,.2f",totalPrice));
    }
}

Screenshots of DemoLastname.java file:

Screenshots of Output: