Shulou(Shulou.com)06/02 Report--

This article mainly explains "how to use regular expressions to match users' passwords with java". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "how java uses regular expressions to match user passwords".

The password form can be set according to the development requirements. Here are several examples of matching passwords:

Regular expression ^ [a-zA-Z]\ w {5pm 17} $

The match starts with a letter, is between 6 and 18 in length, and can only contain characters, numbers, and underscores

Mismatch

The regular expression ^ (? =. *\ d) (? =. * [a murz]) (? =. * [Amurz]) (?!. *\ s). {4jue 8} $

Match 1agdA*$# | 1agdA*$# | 1agdA*$#

Does not match wyrn%@*&$# f | mbndkfh782 | BNfhjdhfjd&*)% # $)

Regular expression [^ A-Za-z0-9]

Match! @ # $|% ^ & * |'>

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