regex - Java Matcher.replaceAll() matches group(0) elements as well -


i think common problem, couldn't find related question in or other tutorial well. if it's duplicate, feel free mark such.

well here problem, have string , replace words test in tested. don't want replace word if it's contained inside <>

eg: string this test <other test end> should replaced this tested <other test end>.

so have create regex (?:<.*?>)|(test) (anything inside <> should non-capturing group , other test should match.

but understand matcher.group(0) match non-capturing group. , what's worse matcher.replaceall() seems replace non-capturing group text well?

how can solve this? there way can specify replaceall() replace group(1) elements?

is there other easy , clean way solve problem?

use negative lookahead assertion.

string.replaceall("test(?![^<>]*>)", "tested")

explanation:

  • test - matches string test if it's not followed by

  • any char not of < or >, 0 or more times.

  • further followed > char. matches test except 1 present inside <>


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