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Editorial Team
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Asked: 2026-05-26T01:20:45+00:00

How do I change acceptance with decimal separator to . instead of , with

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How do I change acceptance with decimal separator to . instead of , with input in Netbeans IDE 7.0.1?

This is within Netbeans itself like trying this –>

System.out.println("Cost?: ");
cost = keyboard.nextDouble();

If this is input with 37.5 following happens –>

Exception in thread "main" java.util.InputMismatchException
    at java.util.Scanner.throwFor(Scanner.java:840)
    at java.util.Scanner.next(Scanner.java:1461)
    at java.util.Scanner.nextDouble(Scanner.java:2387)
    at Lab3_ChangeMoney.main(CostProgram.java:47)
Java Result: 1

But with input 37,5 its ok

I tried via Control Panel, but not

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1 Answer

  1. Editorial Team

    An instance of this class is capable of scanning numbers in the standard formats as well as in the formats of the scanner’s locale. A scanner’s initial locale is the value returned by the Locale.getDefault() method; it may be changed via the useLocale(java.util.Locale) method.

    So this could be fixed by setting the locale to Locale.US:

    keyboard.useLocale(Locale.US);

    Read more about localized numbers on the manual

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