public static void main(String[] args) {

        //Anropar Loginklassen
        Login loginObj = new Login();
		Scanner input = new Scanner(System.in);
        String username, pass;
		do{
		sysout("eter username");
		username = input.nextLine();
		sysout("enter passwsord");
		pass = input.nextLine();
		}while(!loginObj.Login(username, pass));

        System.out.println("1. Overview.");
        System.out.println("2. Transfer money.");


        int mainMenu = input.nextInt();

        if (mainMenu == 1) {
            Accounts overviewObject = new Accounts();
            overviewObject.Accounts();
        }

        if (mainMenu == 2) {
            Transfer transfObj = new Transfer();
            transfObj.OwnTransfer();
        }
    }

____________________________________________________________________________
    String url = "jdbc:mysql://localhost:3306/nkotb";
    String user = "root";
    String password = "1337";
    Scanner userInput = new Scanner(System.in);
    PreparedStatement stmt = null;
    ResultSet rs = null;
    Connection conn = null;

    public boolean Login(String username, String pass) {

        try {
            //1. Connection till mysql
            conn = DriverManager.getConnection(url, user, password);
            //2. Skapa ett statement med scannervaribaler.
            stmt = conn.prepareStatement("SELECT * FROM customers WHERE Name ='" + username + "' AND Password='" + pass + "' ; ");
            //3. Kör sql-query
            rs = stmt.executeQuery();

            if (rs != null) {
            	return true;
            }
            else {
            	return false;
            }

        } catch (SQLException exc) {
            System.out.println("pölpungsprut.");
        }
    }