Java: Filter Course Timetables by Time Range

This method filters a list of 'CourseTimetable' objects based on a given start time and end time. It uses the 'stream()' method to create a stream of 'courseTimetableList'. Then, it applies two filters to the stream using lambda expressions.

The first filter checks if the 'CourseBeginTime' of each 'CourseTimetable' object is after the 'startTime'. The second filter checks if the 'CourseBeginTime' is before the 'endTime'. Finally, it collects the filtered elements into a new list using the 'collect()' method with 'Collectors.toList()'.

The method returns the filtered list of 'CourseTimetable' objects.