Bankomat

import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Vector;

public class Bankomat {

    private static Vector<Account> accounts = new Vector<>(10);
    private static Account loggedInAccountOwner;

    public static void main(String[] args) {
        // TODO Auto-generated method stub

    }

    private void initializeBankomatData() {
        // Create 5 random generated accounts
        accounts.add(new Account(new BigInteger("1000000001"), "Jak Kowalski", new BigDecimal("35.10")));
        accounts.add(new Account(new BigInteger("1000000002"), "Jak Nowak", new BigDecimal("56.60")));
        accounts.add(new Account(new BigInteger("1000000003"), "Henryk Sosna", new BigDecimal("572.25")));
        accounts.add(new Account(new BigInteger("1000000004"), "Aleksander Kosogłowy", new BigDecimal("134.30")));
        accounts.add(new Account(new BigInteger("1000000005"), "Mohinder Sarash", new BigDecimal("999900.00")));
    }

    private static boolean login(Account accountTryingToLogOn) {
        if (verifyAccountOwner(accountTryingToLogOn)) {
            // success
            loggedInAccountOwner = accountTryingToLogOn;
            return true;
        } else {
            // fail, wrong login details (account number or pin) or account doesnt exist at all.
            loggedInAccountOwner = null;
            return false;
        }
    }

    private static boolean verifyAccountOwner(Account accToVerify) {
        for (Account account : accounts) {
            if (account.getAccountNumber().equals(accToVerify.getAccountNumber())) { // if
                                                                                        // that
                                                                                        // accout
                                                                                        // number
                                                                                        // exist...
                if (account.getPin() == accToVerify.getPin()) { // if pin is
                                                                // correct..
                    return true; // ..mean that account exist.
                }
            }
            return false;
        }
        return false; // Mean that account doesnt exist in data base.
    }

    private static void logout() {
    loggedInAccountOwner = null;
}

    private static BigDecimal getAccoutnBallance() {
        return loggedInAccountOwner.getBallance();
    }
}