Question

The body mass index (BMI) is a measure of relative weight based on height and weight.

The body fat percentage (BFP) of a human or other living being is the total mass of fat divided by total body mass, multiplied by 100; body fat includes essential body fat and storage body fat. Essential body fat is necessary to maintain life and reproductive functions.

Write a program that calculates and prints the BFP for multiple persons; the program allows user to enter values for the name, gender, age, BMI of each person,

The formula for BFP is:           

Child body fat percentage = 1.51 * BMI - 0.70*age – 3.6* gender +1.4

Adult body fat percentage = 1.20 * BMI +0.23 * age – 10.8 *gender – 5.4

where gender is 0 for females and 1 for males.

If the user is 15 years old or younger, he/she will be considered as Child in calculation.

If the user is older than 15, he/she will be considered as Adult in calculation.

Implement the following steps:

1. Prompts user to enter the number of BFPs that need to be calculated (number of persons). (a int)
2. Define and call a method to prompt user to enter name (a String). (10 points)
3. Define and call a method to prompt user to enter gender (a int or String). (10 points)
4. Define and call a method to prompt user to enter age (a int). (10 points)
5. Define and call a method to prompt user to enter BMI (a double). (10 points)
6. Define and call a method to calculate one BFP using the given formula and values (arithmetic expressions). (15 points)
7. Print out name, age, gender, BMI, BFP of each person. (5 points)
8. Save BFP values in a double array. (10 points)
1. Define and call a method to calculate and print the average BFP value of the above double array.(20 points)
10. Include the following methods in your application, and call/invoke those methods in the main method.

public static String getName( );

public static String getGender( ); or public int getGender ( );

public static int getAge( );

public static double getBMI ( );

public static double calculateBFP (int gender, int age, double bmi);

public static double calculateAverage (double[] bfpArray);

Sample output:

Please enter number of customers:

2

# 1 Customer:

Please enter your age:

21

Please enter your Gender (1 for Male, 0 for Female):

1

Please enter your BMI:

24.5

You are 21 years old

You are a Male adult

Your BMI is 24.5

Your BFP is 18.03%

# 2 Customer:

Please enter your age:

14

Please enter your Gender (1 for Male, 0 for Female):

0

Please enter your BMI:

18.5

You are 14 years old

You are a Female child

Your BMI is 18.5

Your BFP is 19.53%

The average BFP of all 2 customers is 18.78%.

Extra points (5 points):

1) Create a String array to store all the BFP categories

2) Print the percentage of person that are in category “Fitness”

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
_________________

// CalculateBFP.java

import java.text.DecimalFormat;
import java.util.Scanner;

public class CalculateBFP {
   /*
   * Creating an Scanner class object which is used to get the inputs entered
   * by the user
   */
   static Scanner sc = new Scanner(System.in);

   public static void main(String[] args) {
       // DecimalFormat class is used to format the output
       DecimalFormat df = new DecimalFormat(".00");
       String name;
       int gender, age;
       double bmi, BFP;
       int noOfCustomers;
       System.out.print("Please enter number of customers:");
       noOfCustomers = sc.nextInt();

       double BFPArray[] = new double[noOfCustomers];
       for (int i = 0; i < noOfCustomers; i++) {
           System.out.println("# " + (i + 1) + " Customer:");
           name = getName();
           gender = getGender();
           age = getAge();
           bmi = getBMI();
           BFP = calculateBFP(gender, age, bmi);
           BFPArray[i] = BFP;
           System.out.println("Your Name:" + name);

           System.out.println("You are " + age + " years old");
           if (age > 15) {
               if (gender == 1) {
                   System.out.println("You are a Male child");
               } else {
                   System.out.println("You are a Female child");
               }
           } else {
               if (gender == 1) {
                   System.out.println("You are a Male adult");
               } else {
                   System.out.println("You are a Female adult");
               }
           }

           System.out.println("Your BMI is " + bmi);
           System.out.println(" Your BFP is " + df.format(BFP) + "%");

       }
       double avg = 0, sum = 0;
       for (int i = 0; i < noOfCustomers; i++) {
           sum += BFPArray[i];
       }
       avg = sum / noOfCustomers;
       System.out.println("The average BFP of all " + noOfCustomers
               + " customers is " + df.format(avg) + "%");
   }

   public static String getName() {
       sc.nextLine();
       System.out.print("Enter Name :");
       return sc.nextLine();
   }

   public static int getGender() {
       System.out
               .print("Please enter your Gender (1 for Male, 0 for Female):");
       return sc.nextInt();
   }

   public static int getAge() {
       System.out.print("Please enter your age:");
       return sc.nextInt();
   }

   public static double getBMI() {
       System.out.print("Please enter your BMI:");
       return sc.nextDouble();
   }

   public static double calculateBFP(int gender, int age, double bmi) {
       double BFP = 0;
       if (age <= 15) {
           BFP = 1.51 * bmi - 0.70 * age - 3.6 * gender + 1.4;
       } else if (age > 15) {
           BFP = 1.20 * bmi + 0.23 * age - 10.8 * gender - 5.4;
       }
       return BFP;
   }
}

________________________

Output:

Please enter number of customers:2
# 1 Customer:
Enter Name :Williams
Please enter your Gender (1 for Male, 0 for Female):1
Please enter your age:21
Please enter your BMI:24.5
Your Name:Williams
You are 21 years old
You are a Male child
Your BMI is 24.5
Your BFP is 18.03%
# 2 Customer:
Enter Name :Bob
Please enter your Gender (1 for Male, 0 for Female):0
Please enter your age:14
Please enter your BMI:18.5
Your Name:Bob
You are 14 years old
You are a Female adult
Your BMI is 18.5
Your BFP is 19.53%
The average BFP of all 2 customers is 18.78%

_______________Could you plz rate me well.Thank You