java - 饼干配料调整器

Question

在运行波纹管代码时，我收到以下错误消息：

在文件中找不到主要方法、JavaFX 应用程序、小程序或 MIDlet

我很困惑为什么我会收到消息，但如果我已经定义了main()

import java.util.Scanner;

public class CookieRecipe 
 { 

   public static void main(String [] args) 
    {


       //Declare Variables
      double cupsofSugarPer48Cookies = 1.5;
      double cupsofButterPer48Cookies = 1;
      double cupsofFlourPer48Cookies = 2.75;
      int regularBatchofCookies = 48;
      int userNumberofCookies;

      double expectedCupsofSugar;
      double expectedCupsofButter;
      double expectedCupsofFlour;

      Scanner scanner = new Scanner( System.in );
      System.out.println("Number of Cookies you need" );
      userNumberofCookies = scanner.nextInt();

      expectedCupsofSugar = ( userNumberofCookies / regularBatchofCookies ) * cupsofSugarPer48Cookies;
      expectedCupsofButter = ( userNumberofCookies / regularBatchofCookies ) * cupsofButterPer48Cookies;
      expectedCupsofFlour = ( userNumberofCookies / regularBatchofCookies ) * cupsofFlourPer48Cookies;

       //Display Information
      System.out.println( "For" + userNumberofCookies + "Number cookies you will need" + expectedCupsofSugar + "cups of Sugar," + 
                         expectedCupsofButter + "cups of Butter" + expectedCupsofFlour + "cups of Flour.");

   }

}

标签： javajgrasp