Regex to remove blacklisted words from a sentence

Question

How can I use a regext to filter out a list of blacklisted(Obscene) words, such that if a black listed words is like \'Bill Joseph\'

 Then \'I am Bill Josephine         


        

Answer 1

Use the negation of the alphanumeric character class:

"[^A-Za-z0-9]Bill Joseph[^A-Za-z0-9]"

Using "\W" in place of "[^A-Za-z0-9]" would work in most cases except when there is an underscore before/after the name. So "Bill Joseph_" still would be seen as valid.