Password Validation in Java using Regular Expression

Regex Validation

This example shows how to validate a Password string in Java using regular expression with Regex Pattern and Matcher validation.

Password Regular Expression Pattern:


Whole combination is means, 6 to 20 characters string with at least one digit, one upper case letter, one lower case letter and one special symbol (“@#$%”). This regular expression pattern is very useful to implement a strong and complex password.

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