public static void username()
	{
		List<Employee> employee = ExtractEmployees.employee;

		String tempUsername = null;
		String username = "";
		Scanner sc = new Scanner(System.in);

		System.out.println("Login Display");
		System.out.println();

		while (tempUsername == null)
		{
			System.out.print("Enter your username: ");
			username = sc.nextLine();

			if (username == null || username.isEmpty())
			{
				System.out.println("Error! Username is required. Try again.");
			}
			else if (!username.isEmpty())
			{
				tempUsername = usernameLogin(employee, username);

			}
			if (tempUsername == null)
			{
				System.out.println("Error! Username doesn't exist. Try again.");
			}
		}
		password();

	}