One method will check for a “weak password”, i.e., one whose length is between 6 and 9,
inclusive. Do NOT throw an exception.
One method will check an ArrayList of passwords and return an ArrayList with the status of
any invalid passwords (weak passwords are not considered invalid).
The ArrayList of invalid
passwords will be of the following format:
<password><space><message of exception thrown>
Create exception classes for each exception listed in PasswordCheckerUtility Javadoc.
Always check for the length of the password first, since that is the easiest and fastest check.
Once the password fails one rule, you do not need to check the rest of the rules.
The GUI
Provide buttons to allow user to check validity of one password or a file of passwords.
Ask the user to enter the password and to re-type the password.
If the two are not the
same, inform the user.
Create a tool tip
and a mnemonic
for each of the buttons.
Use a FileChooser for the user to select the input file.
Use methods of PasswordCheckerUtility to process the passwords.
Use try/catch structure to catch exceptions
thrown by PasswordCheckerUtility methods
Exceptions
Provide exception classes
for the following:
1.
Length of password is less than 6 characters (class LengthException)
Message – The password must be at least 6 characters long
2.
Password doesn’t contain an uppercase alpha character (class
NoUpperAlphaException)
Message – The password must contain at least one uppercase alphabetic character
3.
Password doesn’t contain a lowercase alpha character (class
NoLowerAlphaException)
Message – The password must contain at least one lowercase alphabetic character
4.
Password doesn’t contain a numeric character (class NoDigitException)
Message – The password must contain at least one digit
5.
Password contains more than 2 of the same character in sequence (class
InvalidSequenceException)
Message – The password cannot contain more than two of the same character in
sequence.
