regex - How to split comma-separated string but exclude some words containing comma in Java -

regex - How to split comma-separated string but exclude some words containing comma in Java -

assume have below string:

"test01,test02,test03,exceptional,case,test04"

what want split string string array, below:

["test01","test02","test03","exceptional,case","test04"]

how can in java?

this negative lookaround regex should work you:

(?<!exceptional),|,(?!case) working demo

java code:

string[] arr = str.split("(?<!exceptional),|,(?!case)");

explanation:

this regex matches comma if 1 of these 2 conditions meet:

comma not preceded word exceptional using negative lookbehind (?<!exceptional) comma not followed word case using negative lookahead (?!case)

that disallows splitting on comma when surrounded exceptional , case on either side.

java regex string