Assignment Description

In this assignment you will create a password tester. The program will ask the user for a password and then determine if the password meets the requirements. A valid password must adhere to the following four rules in this order:

$$ Must be between $7$ and $10$ characters.

$$ Must contain only letters and digits.

$$ Must contain $2$ and only $2$ digits.

$$ Must not be the same as the last two previous passwords.

o For this assignment, you can hard code the following as the previous passwords:

final String PREVIOUS$1=$ "cooper$11"$;

final String PREVIOUS$2="$to$2$mac$2"$;

The program will allow the user $4$ attempts to enter a password that meets the requirements.

After the $4$th try if a valid password was not entered the program will end.

Specifications

$1.$ Add this assignment to your project called CS$1150$

$2.$ Create a Java class within that project called LastNameFirstNameAssignment$7$

$3.$ Follow $"$CS$1150$ Programming Assignments Policy"

$4.$ Write code that:

$$ Allows the user to repeatedly enter a password up to $4$ attempts.

$$ Gracefully handles an invalid password $-$ one that doesn$$t meet the $4$ requirements:

o Handling an invalid password must be done in main.

o Each $$test$$ method returns a boolean.

o For the password to be valid it must pass all $4$ tests otherwise another loop iteration needs to occur where the user reenters the password, and the tests are run again.

o See Output examples for more details.

$$ Step $1$: Declare and initialize any constants. Declare any variables needed before the loop.

$$ Step $2$: Create a loop in main that allows the user to repeatedly enter a password.

o The loop continues while the password is invalid and $4$ attempts have not occurred.

o The loop could look something like the following:

$$

$$boolean passwordPassedTests $=$ false;

$$while $(!$passwordPassedTests && numberAttempts $<$ ATTEMPTS$\_$ALLOWED$)\{$

$//$ Ask user to reenter the password and perform the tests$$

$//$ If all $4$ tests pass, set passwordPassedTests $=$ true

$\}$

o The code inside the loop must:

$$ Prompt the user to enter the password and store the password in a String.

$$ Update the number of attempts counter.

$$ Test the password against each rule in the order shown above.

$$ Each password test has a method $$ see #$5$ below.

$$ If any test fails

$$ Skip all remaining tests after that point and start the loop again

$$ Step $3$: When loop completes display a message indicting if the password meets all $4$ requirements $($valid$)$ or failed the $4$ requirements $($invalid$)$

$5.$ Design your program to use the following methods:

$//$ Perform test to determine if password$$s length is between minLength and maxLength

public static boolean lengthTest $($String password, int minLength, int maxLength$)$

$//$ Perform test to determine if password contains only digits and letters

public static boolean onlyLettersAndDigitsTest $($String password$)$

$//$ Perform test to determine if password contains only $2$ digits

public static boolean containsTwoDigitsTest $($String password$)$

$//$ Perform test to determine if password is different than previous two passwords

public static boolean differentThanLastTwoPasswordsTest $($String previousPassword$1,$

String previousPassword$2,$

String password$)$

$//$ Display a specific error message based on the error codes $14$:

$//1-$ length test error

$//2$ only letters$/$digits test error

$//3-$ only two$-$digits test error

$//4-$ different than previous passwords error

$//$ Requires using a switch statement

public static void printErrorMessage $($int errorCode$)$

Must Do and Tips

Must Do: In your design notebook, you must include pseudocode for main and these $2$ methods:

$$ onlyLettersAndDigitsTest

$$ containsTwoDigitsTest

Must Do: Use constants for the different errors:

$$ There are several constants that can be created for this assignment.

$$ At a minimum, you must create constants for each error, for example:

$$final int LENGTH$\_$ERROR $=1$;

Must Do: Create each method as defined in assignment sheet.

$$ Create the methods as defined in step $5$ with the given return type and parameters.

$$ You can add more methods, but you must write all the methods in step $5$ as shown.

$$ Do not change the return types or parameters of these methods.

$$ These methods but all be used in your solution to perform the different tests.

Must Do: Call printErrorMessage only in main.

$$ The printErrorMessage method is the only place in the code where the test results are displayed.

$$ The method should only be called in main.

$$ The method must use a switch statement.