public static void showMenu() throws IOException {
		boolean showMenu = true;
		int option = -1;

		Scanner s = new Scanner(System.in);
		System.out
				.println("Menu:\n1. Export Transcript \n2. Export Data \n3. Export Assignment Grade  \n4. Exit\nChoose your options:");

		try {
			option = s.nextInt();
		} catch (InputMismatchException e) {
			System.out.println("Only numbers are allowed!\n");
		}

		switch (option) {
		case 1:
			importData();
			int id = selectStudentTranscript();
			if (id == 0) {
				for (int g = 1; g < student.size(); g++) {
					tranScript(g);
				}
			} else {
				tranScript(id);
			}
			break;
		case 2:
			exportData();
			break;
		case 3:
			exportCourseGrade(student);
			break;
		case 4:
			showMenu = false;
			break;
		}

		if (showMenu) {
			showMenu();
		}
	}