Note : Please don$$t send me AI generated answer. It doesn$$t help me at all. I need answer which is honestly solved by the tutor.

Password Validation:

The rules passwords are going to follow:

$1.$ The passwords must be between $12$ and $25$ characters long

$2.$ The passwords must contain at least $1$ lowercase letter

$3.$ The passwords must contain at least $1$ uppercase letter

$4.$ The passwords must contain at least $1$ number

$5.$ The passwords must contain at least $1$ these special characters: $!$@#$$\%$&$*()-+=^$

$6.$ The passwords must not contain any whitespace characters

We have to make the following changes in the PasswordValidator.java file.

The PasswordValidator.java file is attached below:

$1$Firstly $,$ We need to Create a new custom unchecked exception called InvalidPasswordException. This exception should accept an error message string as input, and display this error message when we print out the error.

$2.$Then, We have to Write the logic for the validatePassword method. The method should check all of the rules for passwords. The method should use a StringBuilder to accumulate all of the rules that the password is breaking. The method should then return true if the password is

valid, or throw an InvalidPasswordException with our error message if it$$s not valid.

For this problem, we will use the matches$()$ method of the String class. The matches$()$

method will accept a regex pattern string and return a boolean for whether that string

matches the pattern or not. These regex patterns work the same as the patterns we learned for the $.$split$()$ method. There$$s one small difference, for this problem we$$ll need to surround our patterns with wildcards $(.*)$ to check if the pattern occurs anywhere in the string.For example, to split out string on any lowercase letters, we would use string.split$([$a$-$z$])$; To match if our string has any lowercase letters, we would do string.matches$(.*[$a$-$z$].*)$;

$$ Lastly $,$ we have to Modify the main method so that we$$ll handle the exceptions that may occur during password validation. If the exception occurs, catch it and print it out.

PasswordValidator.java:

public class PasswordValidator

$\{$

public static boolean validatePassword$($String password$)\{$

$//$ Your code goes here!

$\}$

public static void main$($String$[]$ args$)\{$

String$[]$ passwords $=\{$

"password",

$"!!$password$1111111!",$

"PasswordTesting!",

$"$PW$!!!!^^$$$$$$",$

"Password$1!",$

"INVALIDPASSWORD!$1",$

"Space password $!0",$

"ValidPassw$0$rd$!",$

$"$$VAL$1$D$\_$PassWord"

$\}$;

for$($String p : passwords$)\{$

$//$ Modify this part to handle exceptions

validatePassword$($p$)$;

System.out.println$($p $+"$ is valid"$)$;

System.out.print$("$

$")$;

$\}$

$\}$

$\}$

Sample out put :

password

InvalidPasswordException:

$-$Password must be between $12$ and $25$ characters

$-$Password must contain an uppercase letter

$-$Password must contain a digit

$-$Password must contain special character

$!!$password$1111111!$

InvalidPasswordException:

$-$Password must contain an uppercase letter

PasswordTesting!

InvalidPasswordException:

$-$Password must contain a digit

PW$!!!!^^$$$$$

InvalidPasswordException:

$-$Password must contain a lowercase letter

$-$Password must contain a digit

Password$1!$

InvalidPasswordException:

$-$Password must be between $12$ and $25$ characters

INVALIDPASSWORD!$1$

InvalidPasswordException:

$-$Password must contain a lowercase letter

Space password $!0$

InvalidPasswordException:

$-$Password must not contain whitespace

ValidPassw$0$rd$!$ is valid

$VAL$1$D$\_$PassWord is valid