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Please please help me!
Submitted by prairie_hoops on Tue, 10/27/2009 - 18:14.
Tags:
Hi, i'm really really new to Java and programming in general. I'm working my way through the Java for Dummies book and came across a problem with one of the examples. Here is the code:
import java.util.Scanner;
class VersatileSnitSoft {
public static void main(String args[]) {
Scanner myScanner = new Scanner(System.in);
double amount;
System.out.print("What's the price of a CD-ROM? ");
amount = myScanner.nextDouble();
amount = amount + 25.00;
System.out.print("We will bill $");
System.out.print(amount);
System.out.println(" to your credit card.");
}
}Now, the program compiles but it crashes if i enter in a value with a decimal point.
Here's the output after i enter a value with a decimal point.
What's the price of a CD-ROM? 5.75
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 VersatileSnitSoft.main(VersatileSnitSoft.java:10)
Process completed.
Any help would be greatly appriciated. Thanks.
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Use comma instead of dot and
Use comma instead of dot and enjoy!
Or try this code if You want
Or try this code if You want to use dot
< amount = myScanner.nextDouble();
> amount = Double.parseDouble(myScanner.next());
Based on your results can
Based on your results can one assume you're using a PC with locale settings such that decimal points are represented by a character other than ".", then?
The Scanner class by default will use the locale settings for the current runtime environment, so without overriding them, if you're someplace where "one thousand one hundred and fifty and 53 hundredths" is written "1.150,53" versus "1,150.53" then you will have to use the appropriate character for your "decimal point" in your input.
So...I guess I've really just expanded upon the 1st responder's answer of "use ',' instead of '.' and you'll be fine". But that's the "why" of it, potentially at least...
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