Why is it such a pain to use java in a country that uses commas as decimal?

Why is it such a pain to use java in a country that uses commas as decimal separator?
A few weeks back I've asked here about the keypad decimal key. For some reason, java doesn't map the decimal key to a comma on the Portuguese (Portugal) keyboard layout. I've got no answer and I ended up using a custom plainDocument on the JTextFields to replace all points with commas.
Now, I've just spent the whole morning trying to store and use decimal numbers properly. For some reason, a Double/Float .valueOf method (or the corresponding parse method) simply ignores the locale in use and uses US defaults when parsing the string. I can't parse anything with commas in those methods and I should, as it is the decimal separator for the system and default locale being used by java.
First of all, I shouldn't be expected to perform replacements on every single operation that comes with a comma and I obviously can't be expected to program my own locale checking to decide what decimal separator to use in each final system. Second, is there any way to work with numbers seamlessly, without having to know the locale of the end user?
I'm sorry if this is all my fault for doing something completly wrong, I'm new to java and I did search around to no avail. I'm really frustrated with what seems to be a complete lack of support in java for locales other than the US one.

Good old Cobol has the "DECIMAL-POINT IS COMMA" clause... And isn't it great? :)
Second, is there any way to work with numbers seamlessly, without having to know the locale of the end user?Consider "123.456". In some locales, this number is one hundred twenty-three thousand, four hundred fifty-six. In other locales it is one hundred twenty-three and four hundred fifty-size thousandths. How will you be able to determine which, without a locale?That's not what I've meant. Java should know the locale and behave accordingly. I don't have to know the locale of the end user since it might vary greatly. My point is that if strings are flying around with commas and if comma is the decimal separator on the end user's machine, any method aimed at parsing a numeric value out of a string should regard commas as such. I'm constantly replacing dots with commas and vice versa which could cause trouble if a different locale is used.
And I mean that as a rant. Given my inexperience with Java, there might be good reasons for such a behaviour as baftos argued. What I'm really interested is in finding the proper way to deal with this issue.
Have you tried the NumberFormat.parse? I will now.
Edited by: Smigh on Apr 9, 2008 9:21 AM

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