Complete the fifth programming challenge, PasswordVerifier. The UML diagram of the class is shown

below.

PasswordVerifier

$-$ MIN$\_$PASSWORD$\_$LENGTH : int $=8$

$+$ isValid $($str : String$)$ : boolean

$-$ hasUpperCase$($str : String$)$ : boolean

$-$ hasLowerCase$($srr : String$)$ : boolean

$-$ hasDigit$($str : String$)$ : boolean

Write a class, PasswordVerifier, per the UML diagram above, and create a second class,

PasswordDemo, with a main routine to demonstrate the use of the PasswordVerifier class.

The method isValid should be static. This method should return true if a password has more than

$7$ characters, contains upper case, lower case and a digit.

CS$111,$ CWU, Homework $2,$ Tatiana Harrison

page $5$ of $6$

Do NOT instantiate an object of type PasswordVerifier.

You can have your program interact with the user via the command$-$line input, or by using dialogue

boxes. The below two images show a $($successful$)$ invocation of the program PasswordDemo.

Refer to the rubric posted in Canvas for details about point accrual. A sample invocation of the program

is shown above.