java - Splitting on "," but not "\," -


this question has answer here:

i'm looking regular expression match , ignore \, in java's regex engine. comes close:

[^\\],

however, matches previous character (in addition comma), won't work.

perhaps regular expression approach wrong 1 altogether. intending use string.split() parse simple csv file (can't use external library) escaped commas.

you need negative look-behind assertion here:

string[] arr = str.split("(?<![^\\\\]\\\\),");

note need 4 backslashes there. first escape backslash java string literal. , again escape both backslashes regex.


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