public static void addClass(Course course, int type){ //adding class information - name, index, intake size for each course class created
		String classType = type==1?"lecture":type==2?"tutorial":"laboratory";
		System.out.println("How many classes for " + course.getName() + " - " + classType + " ?");
		int classAmt;// = sc.nextInt();
		while(true){//only int input accepted
			if(sc.hasNextInt()){
				classAmt = sc.nextInt();
				break;
			}else {
				System.out.println("Please enter a valid choice!");
				sc.next();
			}
		}
		for(int i =0;i<classAmt;i++){ //repeat this step for # of classes they've entered
			System.out.println("Add a Course Class : Input Class Name, Class Index, Class Intake Size.");
			int inClassType;
			while(true){//only int input accepted
				if(sc.hasNextInt()){
					inClassType = sc.nextInt();
					break;
				}else {
					System.out.println("Please enter a valid choice!");
					sc.next();
				}
			}
			CourseClass tempCourseClass = new CourseClass(sc.next(), sc.next(), inClassType, type, course);
			course.getCourseClassList().add(tempCourseClass);
		}
		System.out.println("New Course Class : " + classAmt + " " + classType + " has been added successfully!\n");
	}