Java基础：BMI计算

import java.math.BigDecimal;
import java.util.Scanner;

/**
 * BMI计算
 */
public class CalculatorBMI {
    public static void main(String[] args) {
        //身高，单位m
        double height;
        //体重,单位kg
        double weight;
        double BMI;
        Scanner scanner=new Scanner(System.in);
        System.out.println("请输入您的身高:");
        height=scanner.nextDouble();
        System.out.println("请输入您的体重:");
        weight=scanner.nextDouble();
        BMI=weight/Math.pow(height,2);
        BigDecimal two=new BigDecimal(BMI);
        BMI=two.setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue();
        System.out.println("您的BMI指数是"+BMI);
        BMI_sort(BMI);
    }

    public static void BMI_sort(double BMI) {
        if (BMI < 18.5) {
            System.out.println("当前体重过低");
        } else if (BMI >= 18.5 && BMI <= 23.9) {
            System.out.println("体重正常");
        } else if (BMI >= 24 && BMI <= 27.9) {
            System.out.println("超重");
        } else {
            System.out.println("肥胖");
        }
    }
}