Reluctant quantifier acting greedy

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My regex is matching too much. How do I make it stop? 4 answers

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{1} in regex is redundant since any element without specified quantifier needs to be found once. Also making it reluctant doesn't make sense since it doesn't describe range of possible repetitions (like {min,max} where adding ? would tell regex engine to make number of repetitions in that range as close to min as possible). Here {n} describes precise number of repetition so min = max = n .

Now you should be able to solve your problem by making .+ (content between brackets) reluctant. To do so use .+? .

So try with:

String regex = "(((|[)(.+?)()|]))";

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