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Java and Currency Counting

Posted on 2011-02-18
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Last Modified: 2012-05-11
Hi Experts,

I want to count a set of numbers that happen to be in EUR format (not USD).
3,45 translates to 3.45 in US

I want to count a bunch of numbers that are in EUR format.  Can anyone offer any tips on how to do this?
Ex:
345,99
200,99
567,83
Total = 1.114,81

I know that BigDecimal will blow up if I use commas so I'm not sure what else to use.  

Thank you!!
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Question by:Greengiants15
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13 Comments
 
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Expert Comment

by:for_yan
ID: 34931077
You just use replace before you use big decimal
String s1 = s.replace(",",".")
is this tyour question?
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Expert Comment

by:for_yan
ID: 34931099
Or maybe even better:

     String s = "1.114,81";
       
        String s1 = "";
        for(int j=0; j<s.length(); j++){
            if(s.charAt(j)== '.')continue;
            if(s.charAt(j)==',')s1 = s1 + ".";
            else s1 = s1 + s.charAt(j);


        }
        System.out.println(s1);
it should print:
 1114.81
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Expert Comment

by:for_yan
ID: 34931103
If you want then to use them as numbers
you can after that use

double x =  Double.parseDouble(s1);
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Expert Comment

by:for_yan
ID: 34931119
You can of course make a method out of it:

String convert(String s){
    String s1 = "";
        for(int j=0; j<s.length(); j++){
            if(s.charAt(j)== '.')continue;
            if(s.charAt(j)==',')s1 = s1 + ".";
            else s1 = s1 + s.charAt(j);
 
        }
      return s1;
}

then you just sum them like

double sum;

sum += Double.parseDouble(convert(s)); - add for each number




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Assisted Solution

by:objects
objects earned 250 total points
ID: 34931131
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Author Comment

by:Greengiants15
ID: 34931174
Thanks objects and for Yan - once I know the currency, then are you saying I should so a String.replace() on the commas?  It there not an easier way to calculate this?
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Expert Comment

by:objects
ID: 34931193
NumberFormat should handle it for you
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Expert Comment

by:for_yan
ID: 34931195
I'm not sure it all depends on currency - it rather depends on the country - on Locale - in some
countries they use commas, in some they do not use.
If your numbers come from different countries, then, i guess you should use
the way onjects suggested bu specify locale. If all your numbers are
uniform in sense of the country like that 1.111,18 then you can
use method which I wrote (replace is not enough - it will not remove the dot).
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Expert Comment

by:objects
ID: 34931217
actually your values aren't actually currency values, they are just numbers.
you should just need to specify locale to use for parsing
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Expert Comment

by:for_yan
ID: 34931237
@objects:
Still, this throws exception for me in Java 1.5:
 
NumberFormat format = NumberFormat.getCurrencyInstance(Locale.FRANCE);
         Object value = format.parse("5,45");
       
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Expert Comment

by:for_yan
ID: 34931244
@objects:
Yes without curreny it works:

NumberFormat format = NumberFormat.getInstance(Locale.FRANCE);
         Object value = format.parse("5,45");
       
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Expert Comment

by:for_yan
ID: 34931254
But this returns just "1", rather than "1115.45"
 
  NumberFormat format = NumberFormat.getInstance(Locale.FRANCE);
         Object value = format.parse("1.115,45");
       
        System.out.println("value: " + value);
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Accepted Solution

by:
for_yan earned 250 total points
ID: 34931280

This works for both 5,45 and 1.115,45:

    NumberFormat format = NumberFormat.getInstance(Locale.GERMANY);
         Object value = format.parse("5,45");
       
        System.out.println("value: " + value);
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