CODEWITHSUNDEEP
javaexceptionnumber-formatting
vivek_jonam
vivek_jonam

Reputation: 3297

How to parse number string containing commas into an integer in java?

I'm getting NumberFormatException when I try to parse 265,858 with Integer.parseInt().

Is there any way to parse it into an integer?

Upvotes: 45

Views: 102175

Answers (7)

Tomasz Nurkiewicz
Tomasz Nurkiewicz

Reputation: 340763

Is this comma a decimal separator or are these two numbers? In the first case you must provide Locale to NumberFormat class that uses comma as decimal separator:

NumberFormat.getNumberInstance(Locale.FRANCE).parse("265,858")

This results in 265.858. But using US locale you'll get 265858:

NumberFormat.getNumberInstance(java.util.Locale.US).parse("265,858")

That's because in France they treat comma as decimal separator while in US - as grouping (thousand) separator.

If these are two numbers - String.split() them and parse two separate strings independently.

Upvotes: 86

anotherdave
anotherdave

Reputation: 6754

If it is one number & you want to remove separators, NumberFormat will return a number to you. Just make sure to use the correct Locale when using the getNumberInstance method.

For instance, some Locales swap the comma and decimal point to what you may be used to.

Then just use the intValue method to return an integer. You'll have to wrap the whole thing in a try/catch block though, to account for Parse Exceptions.

try {
    NumberFormat ukFormat = NumberFormat.getNumberInstance(Locale.UK);
    ukFormat.parse("265,858").intValue();
} catch(ParseException e) {
    //Handle exception
}

Upvotes: 13

John Gardner
John Gardner

Reputation: 25136

Or you could use NumberFormat.parse, setting it to be integer only.

http://docs.oracle.com/javase/1.4.2/docs/api/java/text/NumberFormat.html#parse(java.lang.String)

Upvotes: 2

Bharat Sinha
Bharat Sinha

Reputation: 14363

The first thing which clicks to me, assuming this is a single number, is...

String number = "265,858";
number.replaceAll(",","");
Integer num = Integer.parseInt(number);

Upvotes: 4

micha
micha

Reputation: 49582

You can remove the , before parsing it to an int:

int i = Integer.parseInt(myNumberString.replaceAll(",", ""));

Upvotes: 22

Alireza
Alireza

Reputation: 4516

Try this:

String x = "265,858 ";
    x = x.split(",")[0];
    System.out.println(Integer.parseInt(x));

EDIT : if you want it rounded to the nearest Integer : 

    String x = "265,858 ";
    x = x.replaceAll(",",".");
    System.out.println(Math.round(Double.parseDouble(x)));

Upvotes: 0

Tim Bender
Tim Bender

Reputation: 20442

One option would be to strip the commas:

"265,858".replaceAll(",","");

Upvotes: 5

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