Regular Expression In Android for Password Field

Question

How can i validating the EditText with Regex by allowing particular characters . My condition is :

Password Rule:

1. On

Answer 1

Most common password validation is

1. At least 8 character
2. Require numbers
3. Require special character
4. Require uppercase letters
5. Require lowercase letters

Regex:

^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[\\\/%§"&“|`´}{°><:.;#')(@_$"!?*=^-]).{8,}$

Kotlin code:

    val PASSWORD_REGEX_PATTERN = "^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[\\\/%§"&“|`´}{°><:.;#')(@_$"!?*=^-]).{8,}$"

    fun isValidPassword(password: String?): Boolean {
        val pattern: Pattern =
            Pattern.compile(PASSWORD_REGEX_PATTERN)
        val matcher: Matcher = pattern.matcher(password)
        return matcher.matches()
    }

online regex validator to check it:

• https://regex101.com/
• https://www.freeformatter.com/java-regex-tester.html#ad-output