Thread: Regular Expression (Pattern Matching)

  1. #1
    Registered User
    Join Date
    Apr 2008

    Regular Expression (Pattern Matching)

    Hi all, am trying to interpret the following

                  errors.add("name",new ActionMessage("email.invalid") );
    and my interpretation is
    ^[a-zA-Z] must start with a letter(s)
    [\\w\\.-]* can be followed by  a number of characters including/ending with a dot or hyphen
    [a-zA-Z0-9]@ must have a letter(s) and should be followed by '@'
    [a-zA-Z0-9][\\w\\.-]*[a-zA-Z0-9] same as above (a string which may contain a dot or hyphen
    \\. a dot must exist 
    [a-zA-Z][a-zA-Z\\.]*[a-zA-Z]$" a string which may contain a dot but must end with word characters
    Have a question, does these dots [\.] within brackets suggests that i can have dots in my address i.e ?

  2. #2
    Registered User Kernel Sanders's Avatar
    Join Date
    Aug 2008
    Yes. It's saying that there are any number of strings made of letters, separated by '.'s

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