OVERRIDING-SIMPLE
Overriding is a runtime polymorphism. The inherited class has the overridden method which has the same name as the method in the parent class. The argument number, types, or return types should not differ in any case. The method is invoked with the object of the specific class ( but with the reference of the parent class).
Write a program to calculate projected revenue for exhibition and stage event using inheritance and method overriding
[Note :
Strictly adhere to the object-oriented specifications given as a part of the problem statement.
Use the same class names and member variable names. ]
Consider a parent class Event and define the following protected attributes,
| Attributes | Datatype |
| name | String |
| detail | String |
| ownerName | String |
Include appropriate getters and setters.
Prototype for the parameterized constructors to the Event class in the following order Event(String name, String detail, String ownerName)
Declare the abstract method public abstract Double projectedRevenue() in the Event class
Consider a child class Exhibition that extends Event that defines with the following attribute,
| Attributes | Datatype |
| noOfStalls | Integer |
Include appropriate getters and setters.
Prototype for the parameterized constructors to the Exhibition class in the following order Exhibition(String name, String detail, String ownerName, Integer noOfStalls). Use super( ) to call and assign values in the base class constructor.
Implement the abstract method projectedRevenue() in Exhibition class
MethodName
public Double projectedRevenue()
Description
Calculate revenue and return the double value. Each stall will produce Rs.10000 as revenue
Consider another child class StageEvent that extends Event that defines with the following attribute,
| Attributes | Datatype |
| noOfShows | Integer |
| noOfSeatsPerShow | Integer |
Include appropriate getters and setters.
Prototype for the parameterized constructors to the StageEvent class in the following order StageEvent(String name, String detail, String ownerName, Integer noOfShows, Integer noOfSeatsPerShow). Use super( ) to call and assign values in the base class constructor.
Implement the abstract method projectedRevenue() in StageEvent class
MethodName&Description
public Double projectedRevenue()
Calculate revenue and return the double value. Each seat produces Rs.50 revenue.
Consider the class Main. It includes the method main. In the main( ) method the event details are read from the user and the methods of the above classes are called
The link to download the template code is given below
Code Template
Input and Output Format:
Refer to sample input/output for other further details and format of the output.
The double values should be formatted to 1 decimal place.
[All Texts in bold corresponds to the input and rest are output]
Sample Input/Output 1:
Enter the name of the event:
Science Fair
Enter the detail of the event:
Explore Technology
Enter the owner name of the event:
ABCD
Enter the type of the event:
1.Exhibition
2.StageEvent
1
Enter the number of stalls:
65
The projected revenue of the event is 650000.0
Sample Input/Output 2:
Enter the name of the event:
Magic Show
Enter the detail of the event:
See Magic without Logic
Enter the owner name of the event:
SDFG
Enter the type of the event:
1.Exhibition
2.StageEvent
2
Enter the number of shows:
10
Enter the number of seats per show:
100
The projected revenue of the event is 50000.0
class Event{
private String name;
private String detail;
private String ownerName;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDetail() {
return detail;
}
public void setDetail(String detail) {
this.detail = detail;
}
public String getOwnerName() {
return ownerName;
}
public void setOwnerName(String ownerName) {
this.ownerName = ownerName;
}
public Event(String name, String detail, String ownerName) {
this.name = name;
this.detail = detail;
this.ownerName = ownerName;
}
public Double projectedRevenue() {
return null;
}
}
CLASS 2:
class Exhibition extends Event{
public int noOfStalls;
int stall;
public Exhibition(String name, String detail, String ownerName, int stall) {
super(name, detail, ownerName);
this.noOfStalls = noOfStalls;
this.stall = stall;
}
public int getNoOfStalls() {
return noOfStalls;
}
public void setNoOfStalls(int noOfStalls) {
this.noOfStalls = noOfStalls;
}
public Double projectedRevenue() {
return (double) (stall*10000);
}
}
CLASS 3:
class StageEvent extends Event {
private int noOfShows;
private int noOfSeatsPerShow;
public int getNoOfShows() {
return noOfShows;
}
public void setNoOfShows(int noOfShows) {
this.noOfShows = noOfShows;
}
public int getNoOfSeatsPerShow() {
return noOfSeatsPerShow;
}
public void setNoOfSeatsPerShow(int noOfSeatsPerShow) {
this.noOfSeatsPerShow = noOfSeatsPerShow;
}
public StageEvent(String name, String detail, String ownerName, Integer noOfShows, Integer noOfSeatsPerShow) {
super(name,detail, ownerName);
this.noOfSeatsPerShow = noOfSeatsPerShow;
this.noOfShows = noOfShows;
}
public Double projectedRevenue() {
return (double) (noOfShows*noOfSeatsPerShow*50);
}
}
MOTIVATION :
“The way we spend our time defines who we are ”
Although we may not see each other as often as we’d like, distance is no match for the bond that we share. Thank you for coming to visit. It was fantastic to catch up.
VISITE MORE BLOGS