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Asked: 2026-05-18T12:30:43+00:00

I am using following regular expression my java code. ^.*(?=.{6,20})(?=.*[a-z].*[a-z])(?=.*[A-Z])(?=.*[0-9]).*$ When I am trying

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I am using following regular expression my java code. 

^.*(?=.{6,20})(?=.*[a-z].*[a-z])(?=.*[A-Z])(?=.*[0-9]).*$

When I am trying to use same in xml as 

^.\*(\?=.{6,20})(\?=.\*[a-z].\*[a-z])(\?=.\*[A-Z])(\?=.\*[0-9]).\*$

It is not working. It showing exception as below.

java.lang.IllegalArgumentException:
cvc-pattern-valid: Value ‘narendra1A’
is not facet-valid with respect to
pattern
‘^.*(\?=.{6,20})(\?=.*[a-z].*[a-z])(\?=.*[A-Z])(\?=.*[0-9]).*$’ for type
‘#AnonType_passwordcreateUser’.

Can any one help in this regard.

Thanks,

Narendra

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1 Answer

  1. Editorial Team

    This does not directly answer your question, but it may be a better option for you than trying to do password quality checks with regexes.

    The vt-password library is an excellent Java library that implements rule-based password quality checking. In addition to counting characters / character classes, it does things like checking against dictionaries, checking for passwords used previously, checking for repeated characters, etc.

    (If you are using Spring, it is pretty simple to configure the password rule objects in a Spring XML wiring file. This allows you to adjust the rules without changing your code.)

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