the class I already have, need subclass

NOTE: To implement encapsulation, all of the instance variables/fields should be private. The class should include the following: class variables as follows o Total_ Rentals, to hold the number of vehicle rentals so far. Assume that the number of times vehicles have been rented so far is 1050 times and this wil increase when each new VehicleRental (or subclass, TruckRental, as in the next question) object is created. o BASIC which is an initial basic rental charge of $25.00 applied to all rentals .a constructor/initializer method to initialize all instance variables; default values for the accessor methods for accessing the instance variables vlicense (the vehicle's license a getRentalCharge method that computes and returns the total rental charge for the oDAILY which is the daily rental charge of $30.00 per day licenses should be "n/a" and for the number of rental days should be zero number) and numDays (the number of days for which the vehicle has been rented)