Search code examples
javareplaceall

How should I do to replace the double quotation mark following a number only?

For example, the target string is: AAA"AAA"AAAA 18" x 18" bbb"". The target string after replacement should be : AAA"AAA"AAAA 18 inches x 18 inches bbb"".

Solution

  • You could have the following regular expression:

    public static void main(String[] args) {
    String str = "AAA\"AAA\"AAAA 18\" x 18\" bbb\"\"";
    String replaced = str.replaceAll("(\\d+)\"", "$1 inches");
    System.out.println(replaced); // prints AAA"AAA"AAAA 18 inches x 18 inches bbb""
}

    This code replaces all digits followed by a quote " with those digits (using the back reference $1) and inches. As such, this makes sure that only quotes after digits are replaced.