password « validation « Java Regex Q&A

1. Regexp Java for password validation    stackoverflow.com

I'm creating a regexp for password validation that will be used in a Java Application as a configuration parameter. The regexp is: ^.*(?=.{8,})(?=..*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%^&+=]).*$ The password policy is:

• At least 8 chars
• Contains at least one digit
• Contains ...

2. regular-expression in java    stackoverflow.com

I am using this regular expression in a java file to validate the password.

"^\w*(?=\w*\d)(?=\w*[a-z])(?=\w*[A-Z])\w*$"

Invalid escape sequence (valid ones are \b \t \n \f \r \" ...

3. Using a Regular expression for password validation    stackoverflow.com

I am using following regular expression my java code.

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

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

java.lang.IllegalArgumentException: ...

4. regex password validation    stackoverflow.com

How would I get this so it would check for 2 or more digits in the String? Invoking matches on the String s.

s.matches("^[a-zA-Z0-9]{8,}$");

5. Regular Expression needed for a password validator    forums.oracle.com

6. Password Validation using Regular Expression    forums.oracle.com

Please help me wit the regular expression for the password policy mentioned below:- The password length should at least be 8 characters. It should be a combination of at least any two of the given sets. a. Set of alphabets a-z, A-Z b. Set of numerics 0-9 c. Set of special characters ~!@#$ etc.

7. Need Regular Expression for password validation    forums.oracle.com