Shoulder surfing Program Plan: Import required package. Define “AuthenticateTest” class. Define main function. Initializes actual PIN. Create an array “randomDigits” for randomly generated digits. Create an array “userEnteredDigits” for digits entered by the user. Generate random numbers from “1” to “3” for each digit using for loop. Display the sequence of PIN and NUM to screen. Display “10” digits random numbers for “NUM”. Create object for scanner class. Display user prompt statement. Read the five digits PIN number from user. Extract the digits from the code and store in the “userEnteredDigits” array. Convert char to corresponding digit. Check whether the user entered password is equal to random PIN number of actual PIN numbers by calling the method “checkValidPassword()”. If it is match, then display the message “Your password matches correctly!”. Otherwise, display the message “Invalid password.”. Define the boolean method “checkValidPassword()” with three arguments Check PIN numbers one by one using “for” loop. If the user entered PIN is not equal to actual PIN, then returns “false”.

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Chapter 7, Problem 8PP

Program Plan Intro

Shoulder surfing

Program Plan:

Import required package.

Define “AuthenticateTest” class.

Define main function.

Initializes actual PIN.

Create an array “randomDigits” for randomly generated digits.

Create an array “userEnteredDigits” for digits entered by the user.

Generate random numbers from “1” to “3” for each digit using for loop.

Display the sequence of PIN and NUM to screen.

Display “10” digits random numbers for “NUM”.

Create object for scanner class.

Display user prompt statement.

Read the five digits PIN number from user.

Extract the digits from the code and store in the “userEnteredDigits” array.

Convert char to corresponding digit.

Check whether the user entered password is equal to random PIN number of actual PIN numbers by calling the method “checkValidPassword()”.

If it is match, then display the message “Your password matches correctly!”.

Otherwise, display the message “Invalid password.”.

Define the boolean method “checkValidPassword()” with three arguments

Check PIN numbers one by one using “for” loop. If the user entered PIN is not equal to actual PIN, then returns “false”.

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