grep Exception but exclude specific Exception

Question

I am currently matching for \"Exception\" from a file, and output 10 lines before and after using:

grep -C 10 \"[.*Exception\"

Answer 1

If you have grep -P you can specify a negative lookbehind assertion.

grep -C 10 -P '\[.*(?<!AAA|BBB)Exception' 

Answer 2

If your positive match pattern Exception is a word i.e not preceded/followed by other alphabets then you can use word-boundary.

$ grep -C 10 '\<NullPointerException\>\|\<SessionTimeoutException\>'