Simple Java Program Code Similar to ATM.

ATM.java

package com.company;
import java.util.Scanner;
public class ATM {
    private double totalBal = 100;
    Scanner scanner = new Scanner(System.in);

    public int userAccount() {
        System.out.println("Enter Your Account Number");
        int account = scanner.nextInt();
        return account;
    }

    public int userPin() {
        System.out.println("Enter your PIN");
        int pin = scanner.nextInt();
        return pin;
    }


    public void drawMainMenu() {
        System.out.println("\nATM MAIN MENU");
        System.out.println("1 - View Account Balance");
        System.out.println("2 - Withdraw Funds");
        System.out.println("3 - Add Funds");
        System.out.println("4 - Terminate Transaction");
        int con = scanner.nextInt();
        switch (con) {
            case 1:
                viewAccountInfo();
                break;
            case 2:
                withDraw();
                break;
            case 3:
                addFunds();
                break;
            case 4:
                System.out.println("Thanks For Visiting");
                break;


        }

    }

    public void withDraw() {
        int withdrawSelection;

        System.out.println("Withdraw money:");

        System.out.println("1 - 20");

        System.out.println("2 - ₹40");

        System.out.println("3 - ₹60");

        System.out.println("4 - ₹100");

        System.out.println("5 - Back to main menu"); System.out.print("Choice: ");

        withdrawSelection =scanner.nextInt();

        switch (withdrawSelection) {

            case 1:
                checkNsf(20);

                drawMainMenu();

                break;

            case 2:

                checkNsf(40);

                drawMainMenu();

                break;

            case 3:

                checkNsf(60);

                drawMainMenu();

                break;
            case 4:

                checkNsf (100); drawMainMenu();

                break;
            case 5:
            drawMainMenu();

            break;

        }
    }

    public void viewAccountInfo() {

        System.out.println("Account Information:");
        System.out.println("\t--Total balance: ₹" + totalBal);
        drawMainMenu();

    }

    public void deposit(int depAmount) {

        System.out.println("\n**Please insert your money now...**");
        totalBal = totalBal + depAmount;
    }

    public void checkNsf(int withdrawAmount) {

        if (totalBal - withdrawAmount < 8) System.out.println("\n**ERROR!!! Insufficient funds in you accout**");

        else {
            totalBal = totalBal - withdrawAmount;

            System.out.println("\n**Please take your money now...**");

        }
    }

    public void addFunds() {
        int addSelection;

        System.out.println("Deposit funds:");

        System.out.println("1 - ₹20");

        System.out.println("2 - ₹40");

        System.out.println("3 - ₹60");

        System.out.println("4 - ₹100");

        System.out.println("5 - Back to main menu");
        System.out.print("Choice: ");

        addSelection = scanner.nextInt();
        switch (addSelection) {

            case 1:

                deposit(20);
                drawMainMenu();
                break;

            case 2:

                deposit(40);
                drawMainMenu();
                break;

            case 3:

                deposit(60);
                drawMainMenu();
                break;

            case 4:

                deposit(100);
                drawMainMenu();
                break;

            case 5:
                drawMainMenu();
                break;
        }



    }


        public void startATM()
        {
            userAccount();
            userPin();
            drawMainMenu();
        }
    public static void main(String args[])

    { ATM myAtm = new ATM();
        myAtm.startATM();

    }
}