CODEWITHSUNDEEP
java
Tirmean
Tirmean

Reputation: 408

Converting string value with comma to Decimal with correct Locale

I am trying to create Double object from decimal string value where comma is floating separator.

Passing locale arguments to vm:

-Duser.country=BR
-Duser.language=PT


String value = "500,21";        
Double dob = new Double(value);

Getting exception:

java.lang.NumberFormatException: For input string: "500,21" at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1224) at java.lang.Double.valueOf(Double.java:475) at java.lang.Double.(Double.java:567)

Upvotes: 2

Views: 2049

Answers (2)

Cristian Sevescu
Cristian Sevescu

Reputation: 1489

It looks like that new Double(value) does not take into consideration the locale setting.

The implementation ends up calling this method here and it is only looking for ".".

With the locale set as you did you can use this:

NumberFormat.getInstance().parse(value).doubleValue()

Here is a similar discussion.

Upvotes: 0

Mena
Mena

Reputation: 48404

You can try with a localized NumberFormat:

String value = "500,21";
// replace the hard-coded Locale definition with your arguments, or
// Locale.getDefault(), etc.
NumberFormat nf = NumberFormat.getInstance(new Locale("pt", "BR"));
try {
    Double d = nf.parse(value).doubleValue();
    System.out.println(d);
}
catch (ParseException pe) {
    // TODO
}

Output

500.21

Upvotes: 1

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