Confusion regarding a double entry in Java

Question

I have written the following code:

package buck;

import java.util.Scanner;

class apples {

    public static void main(String args[]) {
        Scanner bucky = new Scanner(System.in);
        double fnum, snum, answer;
        System.out.println("Enter first number: ");
        fnum = bucky.nextDouble();
        System.out.println("Enter second number: ");
        snum = bucky.nextDouble();
        answer = fnum + snum;
        System.out.println(answer);
    }
}

When I mention a double number when entering the first number, it doesn't go to the second instruction and I get what is follow:

Enter first number: 
12.2
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 buck.apples.main(apples.java:10)

Can you help me with that?

@SotiriosDelimanolis Please check again the question , I have just edited its content. — user2881695, Feb 11 '14 at 18:27
Do the following `System.out.println(Locale.getDefault());`. It might be your Locale is off. — Sotirios Delimanolis, Feb 11 '14 at 18:28
See http://stackoverflow.com/questions/17150627/scanner-double-value-inputmismatchexception. Possible duplicate. — bdrx, Feb 11 '14 at 18:37

score 0 · Answer 1 · answered Feb 11 '14 at 18:23

0

You must be entering not a double.
E.g. 2.15 is a double number
but 2,15 is not.

answered Feb 11 '14 at 18:23

Yuriy Chulovskyy

163
1
10

I just did 12.2 please check the edit that I have made. – user2881695 Feb 11 '14 at 18:27
2

If you're in a French locale (like me), you need to enter 2,15 and not 2.15 – JB Nizet Feb 11 '14 at 18:43

Confusion regarding a double entry in Java

1 Answers1