Overriding

EVENT.JAVA:

public abstract class Event {
    
       //Fill your code here
	 protected String name;

	 protected String detail;

	 protected 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 abstract Double projectedRevenue();
}

 

EXHINITION.JAVA:

public class Exhibition extends Event {
      
         
	private int noOfStalls;


	public Exhibition(String name, String detail, String ownerName, int noOfStalls) {
		super(name, detail, ownerName);
		this.noOfStalls = noOfStalls;
	}
    public Double projectedRevenue(){

        return 10000.0*noOfStalls;

	
	}
    public int getNoOfStalls() {

        return noOfStalls;

    }



    public void setNoOfStalls(int noOfStalls) {

        this.noOfStalls = noOfStalls;

    }
	
}

STAGEVENT.JAVA:

public class StageEvent extends Event{
	  private int noOfShows;
	    private int noOfSeatsPerShow;
		public StageEvent(String name, String detail, String ownerName, int noOfShows, int noOfSeatsPerShow) {
			super(name, detail, ownerName);
			this.noOfShows = noOfShows;
			this.noOfSeatsPerShow = noOfSeatsPerShow;
		}
		   @Override
		    public java.lang.Double projectedRevenue() {

		        return (double) noOfShows*noOfSeatsPerShow*50;
		    }
		}
      
      

MAIN.JAVA:

import java.io.IOException;

import java.util.Scanner;

 

public class Main {
    public static void main(String[] args) throws IOException {
         Scanner sc = new Scanner(System.in);
         System.out.println("Enter the name of the event:");
         String name=sc.nextLine();
         System.out.println("Enter the detail of the event:");
         String detail=sc.nextLine();
         System.out.println("Enter the owner name of the event:");
         String owner=sc.nextLine();      
         System.out.println("Enter the type of the event:\n1.Exhibition\n2.StageEvent");
         int n=sc.nextInt();
         switch (n)
         {
            case 1:
                System.out.println("Enter the number of stalls:");
                int stall=sc.nextInt();
                Event e=new Exhibition(name,detail,owner,stall);
                System.out.println("The projected revenue of the event is "+e.projectedRevenue());
                break;
            case 2:
                System.out.println("Enter the number of shows:");
                int show=sc.nextInt();
                System.out.println("Enter the number of seats per show:");
                int seat=sc.nextInt();
                Event s=new StageEvent(name,detail,owner,show,seat);
                System.out.println("The projected revenue of the event is "+s.projectedRevenue());
                break;
         }
    }
}