weight BMI height

import java.util.Scanner;
public class WeightOfBmi {
public static void main(String[] args){
Scanner input = new Scanner(System.in);
System.out.println("enter a number for weight: ");
double weight = input.nextDouble();
System.out.println("enter a number for height: ");
double height = input.nextDouble();
final double KILOGRAMS_PER_POUND=0.45359237;
final double METERS_PER_INCH=0.0254;
double weightInKilogram = weightKILOGRAMS_PER_POUND;
double heightInMeters = heightMETERS_PER_INCH;
double bmi = weightInKilogram/(heightInMeters*heightInMeters);
System.out.println("BMI is : "+bmi);
if(bmi<18.5)
System.out.println("偏瘦");
else if(bmi<25)
System.out.println("正常");
else if(bmi<30)
System.out.println("超重");
else
System.out.println("過胖");

}

}

java程序：計算身體質量指數