How do you add days to a `GregorianCalendar` object?
You can use `set(Calendar.DATE, days)` to set a new day, or `add(Calendar.DATE, days)` to increment the day.
Youâ€™re almost there! The `set()` method is for setting a specific day, while `add()` is used to add days incrementally.
Can you explain how `add(Calendar.DATE, days)` works to modify the date by a certain number of days?