yegor256
Reputation: 105133
why dot inside square brackets doesn't match any character?
Why this [.]+ Java regular expression doesn't match my "foo" text, while .+ matches perfectly (tested here)?
Upvotes: 16
Views: 3234
Answers (1)
Reimeus
Reputation: 159844
[.] is equivalent to escaping the . (dot) character, i.e. \\..
Once the character appears in a character class, it loses its status as a special character.
As foo doesn't contain any dots, nothing is matched. .+, on the other hand, is a wildcard greedy expression that matches everything.
Upvotes: 32
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