Create an inheritance hierarchy for a business that sells building materials. La
ID: 3937180 • Letter: C
Question
Create an inheritance hierarchy for a business that sells building materials.
Lab 12 – Due 11/8 Create an inheritance hierarchy for a business that sells building materials, Some materials are sold by weight, others are sold by volume, and others are sold by quantity, write a member function to calculate cost using the following formulas, - by weight: $O,05/lb - by volume, SO.92 / cubic ft - by quantity 1 - 10 SO,1/ unit 11- 50 SO9/ unit 51+ SO96/ unit In main LL Instantiate an object of each of the different types, item with weight of 2345 lbs - item with volume of 6SSD cubic fit - item with a quantity of 343 2, Calculate and display the cost for each - call a global function that returns the celluccessed values use polymorphismExplanation / Answer
Ans:
interface CostCalculation
{
public abstract double calculateCost();
}
class SoldByWeight implements CostCalculation
{
int input;
SoldByWeight(int input){
this.input=input;
}
@Override
public double calculateCost()
{
double total=0.05*input;
return total;
}
}
class SoldByVolume implements CostCalculation
{
int input;
SoldByVolume(int input){
this.input=input;
}
@Override
public double calculateCost(){
double total=0.09*input;
return total;
}
}
class SoldByQuantity implements CostCalculation
{
int input;
SoldByQuantity(int input){
this.input=input;
}
@Override
public double calculateCost(){
double total=0;
if(input>=51)
total=0.06*input;
else if(input>=11)
total=0.09*input;
else
total=0.11*input;
return total;
}
}
//main program
class MainDemo
{
public static void main(String args[])
{
SoldByWeight w=new SoldByWeight(2345);
SoldByVolume v=new SoldByVolume(6550);
SoldByQuantity q=new SoldByQuantity(343);
System.out.println(w.calculateCost());
System.out.println(v.calculateCost());
System.out.println(q.calculateCost());
}
}
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