Character Description
#Matches numeric character (Character.isDigit())
HMatches hexadecimal number (0-9, a-f, and A-F)
AMatches alphanumeric character (Character.is LetterOrDigit())
?Matches alphabetic character (Character.isLetter())
UMatches uppercase letter; maps lowercase to uppercase
LMatches lowercase letter; maps uppercase to lowercase
*Wildcard, matches any character
'Escape character to have literal strings/separators in input field