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Thread: Exception in thread "main" java.util.InputMismatchException !Help!

  1. #1
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    Exclamation Exception in thread "main" java.util.InputMismatchException !Help!

    I have tried many different ways like compareTo == and making service code all uppercase with the strService and made equalsIgnoreCase to just equals and still not working! help!

    here is the whole error message I recieve this is line 49

    System.out.println("Enter Your Day Minutes Used: ");
    dayMinutes = console.nextDouble();



    Exception in thread "main" java.util.InputMismatchException
    at java.util.Scanner.throwFor(Unknown Source)
    at java.util.Scanner.next(Unknown Source)
    at java.util.Scanner.nextDouble(Unknown Source)
    at cellphonebill.cellularbill.main(cellularbill.java: 49)


     
    package cellphonebill;
     
    import java.util.*;
     
    public class cellularbill {
     
    	public static void main(String[] args) {
     
                    Scanner console = new Scanner(System.in);
     
    				final double premiumService = 25.00;
    				final double dayPremiumPerMin = 0.10;
    				final double nightPremiumPerMin = 0.05;
    				final double regularService = 10.00;
    				final double regPerMin = 0.20;
     
    				double nightMinutes;
    				double dayMinutes;
    				double dayMinutes1;
    				double nightMinutes1;
    				double amountDue;
    				double usedMinutes;
    				double usedMinutes1;
     
    				int accountNum;
     
     
    				String serviceCode;
    				String userName;
     
     
    				System.out.println("Enter Your Member Account Number: ");
    				accountNum = console.nextInt();
     
    				System.out.println("Enter Your Name: ");
    				userName = console.next();
     
    				System.out.println("What Type Of Service Do You Have:(Regular or Premium) ");
    				serviceCode = console.next();
     
     
     
     
     
    					{
    					if (serviceCode.equalsIgnoreCase("premium"))
     
    					System.out.println("Enter Your Day Minutes Used: ");
    					dayMinutes = console.nextDouble();
     
    					if(serviceCode.equalsIgnoreCase("premium"))
     
    					System.out.println("Enter Your Night Minutes Used: ");
    					nightMinutes = console.nextDouble();
     
    					{				
    					if (dayMinutes > 75)
    					dayMinutes1 = dayMinutes - 75;
     
    					else
    					dayMinutes1 = dayMinutes - dayMinutes;
    					}
     
    					{
    					if (nightMinutes > 100)
    					nightMinutes1 = nightMinutes - 100;
     
    					else
    					nightMinutes1 = nightMinutes - nightMinutes;
    					}
     
    					amountDue = (dayMinutes1 * dayPremiumPerMin) + (nightMinutes1 * nightPremiumPerMin) + (premiumService);
     
    					System.out.println(
    							  "Account Number: /r/n" + accountNum 
    							+ "Service Type: /r/n" + serviceCode 
    							+ "Minutes Service Used (Day): /r/n" + dayMinutes 
    							+ "Minutes Service Used (Night):/r/n" + nightMinutes 
    							+ "Amount Due: " + amountDue);
    					}
     
     
     
     
     
     
    					{
     
    					if (serviceCode.equalsIgnoreCase("regular"))
     
    					System.out.println("Enter Your Minutes Used: ");
    					usedMinutes = console.nextDouble();
     
    					if (usedMinutes > 50)
    					usedMinutes1 = usedMinutes - 50;
     
    					else
    					usedMinutes1 = usedMinutes - usedMinutes;
     
    					amountDue = (usedMinutes1 * regPerMin) + (regularService);
     
    					System.out.println(
    							 "Account Number: /r/n" + accountNum 
    							+" Service Type: /r/n" + serviceCode 
    							+" Minutes Service Used: /r/n" + usedMinutes
    							+" Amount Due: /r/n" + amountDue);
     
    					}
     
     
     
     
     
     
    				console.close();
     
    			}
     
    		}
    Last edited by AabNormal22; November 4th, 2019 at 03:18 PM. Reason: Proper Format On Message Boards & Full Error

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Exception in thread "main" java.util.InputMismatchException !Help!

    Please copy the full text of the error message and paste it here. It has important info about the error.

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. The Following User Says Thank You to Norm For This Useful Post:

    AabNormal22 (November 4th, 2019)

  4. #3
    Super Moderator Norm's Avatar
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    Default Re: Exception in thread "main" java.util.InputMismatchException !Help!

    at java.util.Scanner.nextDouble(Unknown Source)
    at cellphonebill.cellularbill.main(cellularbill.java: 49)
    The user entered a value that was not a double when the call to nextDouble on line 49 was made. It's hard to make a user enter valid numbers, but for testing you should be careful to always enter a valid value.

    One BIG PROBLEM in the code is the misplaced and mis-used {}s. {}s should always be used with if statements:
       if(the condition) {
          // the code to do when the condition is true goes inside the {}s
       }

    There are other {}s that do not have any reason to be there. For example the { BEFORE the if statement.
    If you don't understand my answer, don't ignore it, ask a question.

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