java - Find text in square brackets but not in parentheses -

if have string (from wiki-markup) need parse in java:

this link (is [[ inparen ]] and) (this) 1 [[ notinparen ]] 

i'd use regex extract texts inside [[ ]] not if inside parentheses. example, in example above should return:

notinparen 

but ignore:

inparen , 

... since inside parentheses. can find parentheses , brackets separately no problem:

.*\(.*?\).* , .*?\[\[(.*?\]\].* 

...but can't figure out how find [[ ]], around parentheses, , ignore. thanks!

this fine regex

\(.*?\)|\[\[(.*?)]] 

your desired match in group 1

fyi, make better perform can minimize backtracking replacing lazy match negated character class.

in java becomes

string resultstring = null; try {     pattern regex = pattern.compile("\\(.*?\\)|\\[\\[(.*?)\\]\\]", pattern.dotall | pattern.multiline);     matcher regexmatcher = regex.matcher(subjectstring);     if (regexmatcher.find()) {         resultstring = regexmatcher.group(1);     }  } catch (patternsyntaxexception ex) {     // syntax error in regular expression } 

note group 1 empty cases first part of alternation did match.