CODEWITHSUNDEEP
javaregex
chrisTina
chrisTina

Reputation: 2378

Java Regex Match

Given such Regex code:

Matcher m = Pattern.compile("c:.*?(|t:){1}.*?").matcher(string);

I only want to match something like c:somesubstring|t:somesubstring. However it also matches some thing like this:

c:somesubstring

and

c:somesubstring|a:somesubtring

How could this come? I use (|t:){1} to guarantee that the pattern |t: occurs and occurs only once. Will be helpful to tell me what's wrong with my regex and give me a regex to match only c:somesubstring|t:somesubstring

Upvotes: 2

Views: 197

Answers (1)

Avinash Raj
Avinash Raj

Reputation: 174874

| is a special meta character in regex which acts like a logical OR operator usually used to combine two regexes . You need to escape the | symbol, so that it would match a literal | symbol.

Matcher m = Pattern.compile("c:.*?(\\|t:){1}.*?").matcher(string);

much shorter.

Matcher m = Pattern.compile("c:.*?\\|t:.*?").matcher(string);

Upvotes: 1

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