Answer it
Overriding and overloading in a delivery app
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A delivery app has a superclass Parcel with a method that works out the delivery cost from the parcel's weight. A subclass FragileParcel needs a different cost, because fragile parcels are packed by hand. The programmer also wants a second way to work out the cost of any parcel, when the customer gives a discount code.
Distinguish between overriding and overloading, using this app to give an example of each. [4]