PAN Card Number Validation ProgramYou are required to write a Java program to validate PAN card numbers based on a specific format. The PAN card number format should adhere to the following criteria:The PAN card number should be exactly 10 characters long.The first five characters should be uppercase alphabets ranging from 'A' to 'Z'.The next four characters should be digits ranging from '0' to '9'.The last character should be an uppercase alphabet ranging from 'A' to 'Z'.To implement this validation, create a user-defined exception named InvalidPANFormatException. This exception should be thrown whenever an invalid PAN card number is encountered, and it should provide a meaningful error message explaining the reason for the validation failure. The main program (PANValidator) should:Prompt the user to enter a PAN card number.Validate the entered PAN card number against the specified format using the validatePANFormat method.Handle any InvalidPANFormatException that may be thrown during the validation process and display the corresponding error message.If the PAN card number is valid, display a message indicating its validity.Your task is to understand and analyze the provided Java code, explain the purpose and functionality of the user-defined exception, and describe how the program validates the PAN card number format. Provide a detailed explanation of the program's implementation and its execution flow.

Imagine that you are working at Income Tax Department, and you have been assigned the task of determining whether a given PAN card number is valid or not. If it is not valid, you should inform the user which character at position "x" is not valid. In this case, "x" corresponds to the index of the first invalid character.To qualify as a valid PAN number, it must meet the following conditions. 1.    It should be ten characters long.2.    The first five characters should be any upper-case alphabets.3.    The next four-characters should be any number from 0 to 9.4.    The last character should be any upper-case alphabet.5.    It should not contain any white spaces.Input:StringOutput:Valid or Noty at position x is not-valid (if not-valid)Eg: Input:BNZAA2318JOutput: ValidEg: Input:2NZAA2318JOutput: Not2 at position 0 is not-valid

Hari takes a card from a deck which has got only two-digit numbers. The card he picked has got a number which can be obtained either by multiplying the digit sum by 8 and adding 1 to it or by multiplying the difference of digits by 13 and adding 2 to it. The number Hari got is ____.Marks : 2Negative Marks : 0Answer here54522541

Mahi has a collection of mobile numbers.  His work is to validate them according to the following constraints:It should be of 10 digits.Only numerals are allowed.No leading zeroes.Single space may or may not be available after first 5 digits. Read N number of mobile numbers and classify them as either “VALID” or “INVALID”. Use Python regular expressions to accomplish this task on behalf of Mahi. Sample Input:3944246489056124782a30875312469 Sample Output:ValidInvalidInvalid

Write a Java program that implements a password validator using a custom exception InvalidPasswordException. The program should have a method validatePassword that takes a string as an argument representing a password and checks its validity based on the following rules: The password should be at least 12 characters long.The password should be a combination of uppercase and lowercase letters, numbers, and symbols.If the password does not meet these criteria, the validatePassword method should throw an InvalidPasswordException with an appropriate error message. Provide 5 sample inputs and their corresponding expected outputs to demonstrate the functionality of the validatePassword method.Expected Output:For a valid password, the output should be "Password is valid."For a password that is too short, the output should be "Invalid Password: Password should be at least 12 characters long."For a password without required characters, the output should be "Invalid Password: Password should be a combination of uppercase and lowercase letters, numbers, and symbols."Sample Input:"Strong@Password123"Sample Output:Password is valid.

Given an integer ‘n’, Develop an algorithm and write a java program to check whether it is a Narcissistic number or not.Note: Narcissistic Number is a number that is the sum of its own digits each raised to the power of the number of digits.Boundary Condition: 0  <  n  <= 10000Otherwise, print ‘invalid’ Input FormatNumber ‘n’Output Formatprint a single line containing the string "yes" if the presented scenario is possible or "no" otherwise (without quotes).