EXAM Calorie Calculator

import java.util.Scanner;

        public class Main {

            public static void main(String[] args) {
                // write your code here
                Scanner scanner = new Scanner(System.in);

                char sex = scanner.nextLine().charAt(0);
                double weight = Double.parseDouble(scanner.nextLine());
                double height = Double.parseDouble(scanner.nextLine());
                int age = Integer.parseInt(scanner.nextLine());
                String activity = scanner.nextLine();
height = height * 100;
                double bnm = 0;
                if (sex == 'm') {

                    bnm = 66 + (13.7 * weight) + (5 * height) - (6.8 * age);
                } else if (sex == 'f')
                {
                    bnm = 655 + (9.6 * weight) + (1.8 * height) - (4.7 * age);

                }
                double calories = 0;
                if (activity.equals("sedentary")) {
                    calories = bnm * 1.2;
                } else if (activity.equals("lightly active")) {
                    calories = bnm * 1.375;
                } else if (activity.equals("moderately active")) {
                    calories = bnm * 1.55;

                } else if (activity.equals("very active")) {
                    calories = bnm * 1.725;

                }
                calories = Math.ceil(calories);
                System.out.printf("To maintain your current weight you will need %.0f calories per day.", calories);
            }
        }