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  1. import java.math.BigDecimal;
  2.  
  3. class CalcBMI {
  4.     public static void main(String[] args) {
  5.         String name;
  6.         double height;
  7.         double weight;
  8.         double BMI;
  9.         try {
  10.             name = args[0];
  11.             height = Double.parseDouble(args[1]);
  12.             weight = Double.parseDouble(args[2]);
  13.             BMI = weight / ((height / 100) * (height / 100));
  14.  
  15.             BigDecimal bmi = new BigDecimal(String.valueOf(BMI));
  16.             double su = bmi.setScale(1, BigDecimal.ROUND_HALF_UP).doubleValue();
  17.  
  18.             System.out.println("名前:" + name);
  19.             System.out.println("身長:" + height + "[cm]");
  20.             System.out.println("体重:" + weight + "[kg]");
  21.             System.out.println("BMI:" + su);
  22.             if (BMI < 18.5) System.out.println(name + "は痩せ型です。");
  23.             else if (BMI >= 18.5 && BMI < 25.0) System.out.println(name + "は標準体型です。");
  24.             else if (BMI >= 25.0) System.out.println(name + "は肥満型です。");
  25.         } catch (ArrayIndexOutOfBoundsException e) {
  26.             System.out.println("引数の数が間違っています。");
  27.             System.out.println("使い方：java CalcBMI 名前身長[cm] 体重[kg]");
  28.         } catch (NumberFormatException e) {
  29.             System.out.println("数値が正しく入力されていません。");
  30.             System.out.println("使い方：java CalcBMI 名前 身長[cm] 体重[kg]");
  31.         } finally {
  32.  
  33.         }
  34.     }
  35. }
Success #stdin #stdout 0.09s 27808KB
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Mike 178.2.8 aaa
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引数の数が間違っています。
使い方：java CalcBMI 名前身長[cm] 体重[kg]
https://ideone.com/aRFLc3
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
secret

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