Regex to match a C-style multiline comment

Question

I have a string for e.g.

String src = \"How are things today /* this is comment *\\*/ and is your code  /*\\* this is another comment */ working?\"
         


        

Answer 1

Try this one:

(//[^\n]*$|/(?!\\)\*[\s\S]*?\*(?!\\)/)

If you want to exclude the parts enclused in " " then use:

(\"[^\"]*\"(?!\\))|(//[^\n]*$|/(?!\\)\*[\s\S]*?\*(?!\\)/)

the first capturing group identifies all " " parts and second capturing group gives you comments (both single line and multi line)

copy the regular expression to regex101 if you want explanation