Java 使用附加的if语句计算BMR？

我试图通过增加久坐、稍微活跃、活跃和非常活跃来计算BMR。代码将编译，但不会计算。这是第一次尝试，所以任何建议都是有帮助的。我已经成功创建了一个没有添加类别的BMR，但现在我无法进行计算。我试图在添加MaleBMR之前先让FemaleBMR工作

import java.util.Scanner;

public class BMR2

{ 
  public static void main(String[] args)
  {

    Scanner kybd = new Scanner(System.in);

    System.out.print("Enter Height: ");

    double Height = kybd.nextDouble ();

    System.out.print("Enter Weight: ");

    Double Weight = kybd.nextDouble ();

    System.out.print("Enter Age: ");

    int Age = kybd.nextInt ();

    double FemaleBMR = 655 + 4.3 * Weight + 4.7 * Height - 6.8 * Age;

    double MaleBMR = 66 + (6.3 * Weight) + (12.9 * Height) - (6.8 * Age);

    int choc = 230;
    System.out.println("Are you Sedentary, Somewhat_Active, Active, or Very_Active?: ");
    boolean Sedentary = kybd.nextBoolean ();
    boolean Somewhat_Active = kybd.nextBoolean();
    boolean Active = kybd.nextBoolean ();
    boolean Very_Active = kybd.nextBoolean ();

    if (Sedentary)
      System.out.println("chocolate bars for female: "+ FemaleBMR*1.2/choc);

    else if (Somewhat_Active)
    System.out.println("chocolate bars for female: "+ FemaleBMR*1.3/choc);

    else if (Active)
      System.out.println("chocolate bars for female: "+FemaleBMR*1.4/choc);

    else if (Very_Active)
      System.out.println("chocolate bars for female: "+FemaleBMR*1.5/choc);

    }
    }

编译但不会计算

java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:840)
at java.util.Scanner.next(Scanner.java:1461)
at java.util.Scanner.nextBoolean(Scanner.java:1756)
at BMR2.main(BMR2.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at edu.rice.cs.drjava.model.compiler.JavacCompiler.runCommand(JavacCompiler.java:272)

---

我很怀疑海报是在为多贝克教授在塞拉学院的CS12或CS13课程做实验作业。我现在在他的课堂上做着完全相同的事情

不管怎样

您应该从在顶部声明字段开始。使其更具可读性，更易于调试/维护

更改双倍权重=kybd.nextDouble（）；加倍重量=kybd.nextDouble（）

对于生活方式选择评估器（久坐、活跃、非常活跃），请使用开关语句

在此处了解switch语句：

下面是我的版本。注意注释中的空白和适当的文档，使代码更易于阅读、理解和维护。

//代码从下面开始

导入java.util.Scanner

公共级BMR计算器

{

公共静态void main（字符串参数[]）

{

//田地

double BMRMale, BMRFemale; // male and female bmr calculation fields

double height; // inches
double weight; // pounds (lbs)

final int maleOption = 1;

final int femaleOption = 2;

int userChoice;

int age = 0;


Scanner kb = new Scanner ( System.in ); // creates a keyboard scanner object called: kb   


  System.out.print("What is your age: ");

  age = kb.nextInt();


  System.out.print("Enter your height (inches): ");

  height = kb.nextDouble();

  System.out.print("Enter your weight (pounds): ");

  weight = kb.nextDouble();




  // male or female gender selction prompt

  System.out.print ("Enter 1 for male or 2 for female gender selection: ");

  userChoice = kb.nextInt();

/*

*卡路里燃烧计算：

*哈里斯-本尼迪克特法

*BMR男性：=66+（6.23倍体重单位磅）+（12.7倍身高单位英寸）–（6.8倍年龄）

*BMR女性：=655+（4.35倍体重）（4.7倍身高）（4.7倍年龄）

*/

---

如果（userChoice>=1&&userChoice您要求它读取一个

布尔值，但它看到了一些其他输入。请发布输入。我不确定在哪里可以找到其他输入。同样，我是java新手。为什么垂直空白的数量如此之多？对我来说阅读起来更简单。如果有帮助的话，我去掉了一些。比如chrylis说，你没有在你应该在的地方输入布尔值。当你运行这个程序时，在你问了久坐等问题之后，你问了四个布尔值。你的错误是告诉你，你在为其中至少一个输入不同的值。
  switch( userChoice )

  {
     case maleOption:

 //  BMR Men: = 66 + (6.23 X weight in pounds) + (12.7 X height in inches) – (6.8 X age)

     BMRMale = 66 + (6.23 * weight) + (12.7 * height) - (6.8 * age);

     System.out.println ("Your Male BMR is: " + BMRMale );


     break; // break out of maleOption


     case femaleOption:

// BMR Women: = 655 + (4.35 X weight in pounds) + (4.7 X height in inches) – (4.7 X age)


     BMRFemale = 655 + ( 4.35 * weight ) + (4.7 * height ) - (4.7 * age );

     System.out.println ("Your Female BMR is: " + BMRFemale );

     break; // break out of femaleOption




  } // end switch case

{

     System.out.println("Invalid gender choice. Please enter 1 for male, 2 for female !");



} // end if .. else block