MainClass.java

import java.util.Scanner;

public class MainClass {

    public static void main(String[] args) {

        AtmOperationInterf op = new AtmOperationImpl();
        int  atmnumber = 12345;
        int atmpin = 123;
        Scanner in = new Scanner(System.in);
        System.out.println("Welcome to ATM Machine!");
        System.out.println("Enter ATM Number: ");
        int atmNumber = in.nextInt();
        System.out.println("Enter Pin: ");
        int pin= in.nextInt();

        if(atmnumber == atmNumber && atmpin == pin ){
            while(true){
                System.out.println("1. View Available Balance \n2. Withdraw Amount\n3. Deposit Amount\n4. View Ministatement\n5. Exit ");

                System.out.println("Enter Choice: ");
                int ch = in.nextInt();
                if(ch==1){
                    op.viewBalance();

                } else if (ch==2) {
                    System.out.println("Enter amount to Withdraw");
                    double withdrawAmount = in.nextDouble();
                    op.withdrawAmount(withdrawAmount);

                } else if (ch==3) {
                    System.out.println("Enter amount to Deposit : ");
                    double depositAmount = in.nextDouble();
                    op.depositAmount(depositAmount);

                } else if (ch==4) {

                    op.viewMiniStatement();

                } else if (ch==5) {
                    System.out.println("Collect your ATM Card\n Thank You for using ATM Machine");
                    System.exit(0);
                }else{
                    System.out.println("Please enter correct Choice.");
                }
            }
        }else{
            System.out.println("Incorrect ATM Number or Pin");
            System.exit(0);
        }
    }
}