The Library class has data elements: libraryContents - Use ArrayList and Item class, patronList – Use any collection class (such as ArrayList) and the Patron class, employeeList – Use any collection class (such as ArrayList) and the Employee class.
Default constructor with no inputs that gets the real current date from the OS by using one of the built in date types (e.g., Date, Calendar, GregorianCalendar, …) The Java built-in type should ONLY be used to get the current date to put in the LibraryDate object.