TDEE.java

/**
 * Program to calculate the Total Daily Energy Expenditure
 *
 * @ Bijan Tajmir
 * @ 10/19/2014
 */
import java.util.Scanner;
public class TDEE {
    public static void main(String[] args) {
        
        Scanner in = new Scanner(System.in);
        
        //Asks for name
        System.out.print("Enter your name: ");
        String name = in.nextLine();
        
        //Asks for BMR
        System.out.print("Enter your BMR: ");
        int bmr = in.nextInt();   
        
        //Asks for gender
        System.out.print("Gender (M or F): ");
        String gender = in.next();
        
        System.out.println("Select Your Activity Level");
        System.out.println("[0] Resting (Sleeping, Reclining)");
        System.out.println("[1] Sedentary (Minimal Movement)");
        System.out.println("[2] Light (Sitting, Standing)");
        System.out.println("[3] Moderate (Light Manual Labor, Dancing, Riding Bike)");
        System.out.println("[4] Very Active (Team Sports, Hard Manual Labor)");
        System.out.println("[5] Extremely Active (Full-time Athlete, Heavy Manual Labor)");
        System.out.print("\nEnter the letter corresponding to your activity level: ");
        int activityLevelChoice = in.nextInt();
        
        double activityFactor = 0;
        
        if (activityLevelChoice == 0){
            activityFactor = 1.0;
        }else if(activityLevelChoice == 1){
            activityFactor = 1.3;
        }else if(activityLevelChoice == 2){
            if(gender.equalsIgnoreCase("m")){
                activityFactor = 1.6;
            }else{
                activityFactor = 1.5;
            }
        }else if(activityLevelChoice == 3){
            if(gender.equalsIgnoreCase("m")){
                activityFactor = 1.7;
            }else{
                activityFactor = 1.6;
            }
        }else if(activityLevelChoice == 4){
            if(gender.equalsIgnoreCase("m")){
                activityFactor = 2.1;
            }else{
                activityFactor = 1.9;
            }
        }else if(activityLevelChoice == 5){
            if(gender.equalsIgnoreCase("m")){
                activityFactor = 2.4;
            }else{
                activityFactor = 2.2;
            } 
        }else{
            System.out.println("Invalid activity level choice!");
        }
        
        double tdee = bmr * activityFactor;
        
        System.out.println("Name: " + name + "   Gender: " + gender);
        System.out.println("BMR: " + bmr + "   Activity Factor: " + activityFactor);
        System.out.println("TDEE: " + tdee);
    }
}