Answer to Question #190711 in Java | JSP | JSF for Ali

Question

Write a program that asks the user to enter an account number as a string. The account number consists of 8 

characters and is divided as follows:

 The first 2 characters are digits and represent the branch (00 for Beirut, 01 for Saida, 02 for Tripoli).

 The remaining 6 characters represent the customer’s account number

A valid account number consists of exactly 8 characters. If the account is valid, the program prints the details 

(branch and account number). If the account is not valid, the program displays a message to the user.

Answer 1

import java.util.Scanner;

public class AccountDemo {
    public static boolean isValidAccountNumber(String accountNumber)
    {
        if(accountNumber.length()!=8)
            return false;
        if(accountNumber.charAt(0) !='0')
            return false;

        return accountNumber.charAt(1) == '0' || accountNumber.charAt(1) == '1'
                || accountNumber.charAt(2) == '2';
    }

    public static void main(String[] args)
    {
        System.out.print("Enter account number: ");
        String accountNumber = new Scanner(System.in).nextLine();

        if(!isValidAccountNumber(accountNumber))
            System.out.println("Invalid account number");
        else
        {
            if(accountNumber.substring(0,2).equals("00"))
                System.out.println("Branch: Beirut");
            else if (accountNumber.substring(0,2).equals("01"))
                System.out.println("Branch: Saida");
            else
                System.out.println("Branch: Tripoli");

            System.out.println("Account number: "+accountNumber.substring(2));
        }
    }
}