Input double with dot instead of comma

Question

I've got a input in my program expecting a double:

Scanner in_num = new Scanner(System.in);
double num1 = in_num.nextDouble();

but in the uploading system it throws exception java.util.InputMismatchException and I found out that it's because of the system writing a dot as a decimal point.

Is there a way in Java to take a number with a dot as a decimal point instead of comma?

Possible duplicate of [Best way to parseDouble with comma as decimal separator?](https://stackoverflow.com/questions/4323599/best-way-to-parsedouble-with-comma-as-decimal-separator) — Patrick Parker, Mar 25 '18 at 17:55
`Double.parseDouble` only uses dot as a decimal point. Can you give an example? — Peter Lawrey, Mar 25 '18 at 18:50
This may be of use: https://stackoverflow.com/a/49257694/8041461 — jrtapsell, Mar 25 '18 at 19:24

user · Answer 1 · 2021-06-10T05:28:16.693

1

Switch your Scanner into US Locale:

Scanner sc = new Scanner(System.in);
sc.useLocale(Locale.US);
double d = sc.nextDouble();
Use Double.parseDouble():

BufferedReader reader = new BufferedReader(new inputStreamReader(System.in));
double d = Double.parseDouble(reader.readLine());

edited Jun 10 '21 at 05:28

answered Jun 10 '21 at 05:22

user

33
5

score 0 · Answer 2 · answered Mar 25 '18 at 19:31

0

I found solution, just had to think a little bit. I've just taken a next String and parsed it to Double.

double num1 = Double.parseDouble(in_num.next());

answered Mar 25 '18 at 19:31

Alessandro Petric

33
9

Input double with dot instead of comma

2 Answers2