Regex-replace certains string with a range of numbers following after

Question

Okay. So im dealing with cells where certain values need to be removed. In my comment in the code below there is two String examples. I want to create a String that can replace the string at the end with its 8 numbers too. Keep in mind that Im really looking for an algorithm that takes the 8 numbers right after "cvr" and not the text value at the end of a cell as this string could also be at the start.

//dontReplaceme 12345678 || cvr 87654321

String replaceCVRs = textValueForCPR.replaceAll("|CVR|Cvr|cvr|"+ (8 numbers after???))

Answer 1

You may use

String replaceCVRs = textValueForCPR.replaceAll("(?i)(cvr)\\s*\\d{1,8}", "$1")

NOTE : If you want to fail the match if there are more digits after an 8-digit number add (?!\d) lookahead at the end, "(?i)(cvr)\\s*\\d{1,8}(?!\\d)" .

See the regex demo here .

Details

• (?i) - case insensitive mode on
• (cvr) - Group 1: cvr string
• \s* - 0 or more whitespaces
• \d{1,8} - one to eight digits.