public void  addCourse(String name, int hours)
    {
        Scanner x= new Scanner(System.in);
        System.out.println("Please Enter Name: ");
        do  {
        name = x.nextLine();
        } while (name.isEmpty() );
       
        System.out.println("Plase Enter Hours: ");
        hours = x.nextInt();

          do  {
        hours = x.nextInt();
        } while (hours > 3 && hours < 1  );
       

        Course e = new Course(name,hours);
        
        list.add(e);
        
      
    }