java string replace all non digits

Hi,

I am doing some processing on the text data. I have requirement to remove all the charaters from the data except the digits.

How to replace all non digits in a string with some character in Java?

Thanks

View Answers

February 20, 2020 at 12:31 AM

Hi,

Regular expression can be used for replacing in combination with the replaceAll function of String.

Following regular expression can be used:

"[^\\d]"

Here is complete program:

public class ReplaceNonDigit {

    public static void main(String[] args) {
        String data = "Hello you can contact me at my number 999999999. I am in Delhi India.";
        data = data.replaceAll("[^\\d]", "");
        System.out.println(data);

    }

}

Thanks

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