Given the abstract class, RentableDwelling, containing: a (private) double insta

Question

Given the abstract class, RentableDwelling, containing: a (private) double instance variable, rentPerUnit a constructor accepting a double used to initialize rentPerUnit a method, getRentPerUnit that returns the value of rentPerUnit an abstract method getRentalIncome that returns a double write a (non-abstract) subclass, ApartmentHouse, containing: an int instance variable numberOfApartments a constructor accepting a double, passed to the superclass constructor, and an int used to initialize numberOfApartments the method getRentalIncome calculated as the product of numberOfApartments and the rent per unit. getRentalIncome returns a double.

Explanation / Answer

public class ApartmentHouse extends RentableDwelling {

private int numberOfApartments;


public ApartmentHouse( double rent, int num ) {

super( rent );

numberOfApartments = num;

}


public double getRentalIncome() {

return numberOfApartments * this.getRentPerUnit();

}

}

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