In IDEs a common operation is to perform a search and replace operation using a regex pattern in the search field and another pattern with capture groups in the replacement field.
For example, I can search for (\d)(\D)(\d)
and replace it with first: \1; second: \2; third: \3
. This would produce the following results.
- "1a2" => "first: 1; second: a; third: 2"
- "8o8" => "first: 8; second: o; third: 8"
Is there an easy way to perform this same operation on a String object in Apex? I'm looking for a solution that isn't hard-constrained to only process three capture groups. The number of capture groups is variable: could be 2, 3, 5 or any number.
Best Answer
There are Matcher and Pattern classes, that can be used to use regex. for example the following code does, that you want
output is
\1
equals to capturing specific groupmatch.group(1)