run(int stops, ArrayList custList): 1. Create an instance of Train and pass through constructor stops and custList 2. Call Train's simulate method 3. Call Train's displayStops method main() method: 1. Creates an instance of Simulation class 2. Creates custList of type ArrayList and assigns null 3. Calls Simulator's getStopsFromUser() method and saves the return value in variable (stops) 4. Loops as long as custList is null a. Calls Simulator's getInputFile() method. Save the returned File instance b. Call Simulator's checkFile() method passing it stops and instance of File. Save returned value in custList 5. Call Simulator's run method passing it the stops and custList