java使用Scanner类来获取用户的输入计算后进行if多分支语句判断

import java.util.Scanner;
public class ComputeBMI{
	public static void main(String[]args){
		Scanner input=new Scanner(System.in);
		//Prompttheusertoenterweightinkilograms
		System.out.print("Enter weight in kilograms:");
		double weight=input.nextDouble();
		//Prompttheusertoenterheightinmeters
		System.out.print("Enter height in meters:");
		double height=input.nextDouble();
		//ComputeBMI
		double bmi=weight/(height*height);
		//Displayresult
		System.out.printf("Your BMI is %5.2f\n",bmi);
		if(bmi<16) System.out.println("You are seriously under weight"); else if(bmi<18) System.out.println("You are under weight"); else if(bmi<24) System.out.println("You are normal weight"); else if(bmi<29) System.out.println("You are over weight"); else if(bmi<35) System.out.println("You are seriously over weight"); else System.out.println("You are gravely over weight"); } }