Question

nedt card pumber Many methodstrcratrg the check iagt have ben developed nethod is shown in she iue bel the sser to enter a ive-digt credit cand number, with the hth dgn being the check Sigh Verity that the credit card namber is vald bisplay the approprate messages indicating whether the crede card number i vaid or invald our grogram thould have the user entar a Aive-digt oredt card mamber. (This should be entered as a ring First your peegran should ersu numbers between 0 and 9 t should then duplicate the aigprithsn shown in the image below to generahe the Snh vation digt. Finaly, your program should generate a mesiage indicating whether the coedit card oumber was vald or invalid Name our 1AVA class CredtCard java. Typical outpat s aso how below for theee eparate trias n should esure that the ingut has exactly 5 digts and that all those dgits are FINAL EXAM d seder 18333 Enber the 5 digil credit card mumber 1853a Credit card number contains illegal characters This program will now oxia 1853a is NOT a valid crodit card number Enter the 5 digit credit card number 1853 You must enter a 5 digit credit card number Enter the 5 digit orodit card number 18530 18530 is NOT a valid credit card number Enter the 5 digit credit card number 18531 18531 is a valid credit card umber

Answer 1

//EventManager.java

import java.util.Scanner;

public class EventManager {

      public static void main(String[] args) {

            //Getting the credit card number from user

            Scanner scan = new Scanner(System.in);

            System.out.print("Enter 5 digit credit card number: ");

            String number = scan.nextLine();

            //Checking for the length of number

            while(number.length()!=5){

                  System.out.print("You must enter 5 digit credit card number: ");

                  number = scan.nextLine();

            }

            char numberArray[] = number.toCharArray();

            //Checking for each the digit to be number

            for(char c: numberArray){

                  if(c<48 || c>57){

                        System.out.println("Credit card number contains illegal characters");

                        System.out.println("The Program will now exit");

                        System.out.println(number+" is NOT a valid credit card number");

                        System.exit(0);

                  }

            }

            //multiplying 2nd and 4th digits with 2

            int i1 = 2 * Character.getNumericValue(numberArray[1]);

            while(i1>=10){

                  i1 = 1+i1%10;

            }

            int i2 = 2 * Character.getNumericValue(numberArray[3]);

            while(i2>=10){

                  i2 = 1+i2%10;

            }

            int total = Character.getNumericValue(numberArray[0])+i1+Character.getNumericValue(numberArray[2])+i2;

            int check = total%10;

            if(Character.getNumericValue(numberArray[4])== (10-check)){

                  System.out.println(number+" is a valid credit card number");

            }

            else{

                  System.out.println(number+" is NOT a valid credit card number");

            }

            scan.close();

      }

}

Outputs:

ProblemsJavadoc eDeclaration Cosole 3 <terminated» EventManager [Java Applicationl C:Program Files Javaire1.8.0 16 Enter 5 digit credit card number 1853 You must enter 5 digit credit card number 1853a Credit card number contains illegal characters The Program will now exit 1853a is NOT a valid credit card number EL Problems @Javadoc I. Declaration 貝Console X <terminated» EventManager Java Applicationl CAProgram FilesJ Enter 5 digit credit card number 18530 118530 is NOT a valid credit card number hỉーProblems @ Javadoc 다 Declaration.貝Console X <terminated EventManager [Java Applicationl C:Program File Enter 5 digit credit card number 18531 18531 is a valid credit card number