GST Calculation

 EVENT.JAVA:

class Event{
	protected String    name;
	protected String	type;
	protected Double	costPerDay;
	protected Integer	noOfDays;
    //Fill your code here
	public Event(String name, String type, Double costPerDay, Integer noOfDays) {
	
		this.name = name;
		this.type = type;
		this.costPerDay = costPerDay;
		this.noOfDays = noOfDays;
	}
	
}

EXHIBITION.JAVA:

import java.text.DecimalFormat;



class Exhibition extends Event {
     DecimalFormat df= new DecimalFormat("#.00");
	 static int gst=5;
	    int noOfStalls;
	    double amt1;
	
  
   
	public int getNoOfStalls() {
		return noOfStalls;
	}


	public void setNoOfStalls(int noOfStalls) {
		this.noOfStalls = noOfStalls;
	}


	  
	   
    public Exhibition(String name, String type, Double costPerDay, Integer noOfDays, int noOfStalls) {
		super(name, type, costPerDay, noOfDays);
		// TODO Auto-generated constructor stub
		this.type=type;
		this.costPerDay=costPerDay;
		this.noOfStalls=noOfStalls;
		this.noOfDays=noOfDays;
	}


	public Double totalCost() {

       //Fill your code here
		  amt1 = costPerDay*noOfDays*1.05;
       return amt1;
    }
    
    


	public String toString() {
       //Fill your code here
	    
		return "Event Details\n"+"Name:"+name+"\n"+"Type:"+type+"\n"+"Number of stalls:"+noOfStalls+"\n"+"Total amount:"+df.format(totalCost());

    }
}

STAGEEVENT.JAVA:

import java.text.DecimalFormat;

class StageEvent extends Event{
	   private static int gst=15;
	   private int noOfSeats;
	   double amt;
	   DecimalFormat df = new DecimalFormat("#.00");

	    public int getNoOfSeats() {
	        return noOfSeats;
	    }

	    public void setNoOfSeats(int noOfSeats) {
	        this.noOfSeats = noOfSeats;
	    }

	    public static int getGst() {
	        return gst;
	    }

	    public static void setGst(int gst) {
	        StageEvent.gst = gst;
	    }

	    public StageEvent(String name, String type, Double costPerDay, Integer noOfDays, Integer noOfStalls){
	        super(name,type,costPerDay,noOfDays);
	        this.noOfSeats=noOfStalls;

	    }
	    public double totalCost(){
	        amt = costPerDay*noOfDays*1.15;
	        return amt;
	    }
	    public void display(){
	        System.out.println("Event Details");
	        System.out.println("Name:"+name);
	        System.out.println("Type:"+type);
	        System.out.println("Number of seats:"+noOfSeats);
	        System.out.println("Total amount:"+amt);

	    }
	    public String toString(){

	        return "Event Details\n"+"Name:"+name+"\n"+"Type:"+type+"\n"+"Number of seats:"+getNoOfSeats()+"\n"+"Total amount:"+df.format(totalCost());
	    }


	}

MAIN.JAVA:

   import java.util.Scanner;
public class Main{
    public static void main(String[] args){
    	Scanner sc=new Scanner(System.in).useDelimiter("\n");
    	System.out.println("Enter event name");
    	String name=sc.next();
        System.out.println("Enter the cost per day");
        double costPerDay=sc.nextDouble();
        System.out.println("Enter the number of days");
        int noOfDays=sc.nextInt();
        System.out.println("Enter the type of event\n1.Exhibition\n2.Stage Event");
        int type=sc.nextInt();
        
        Event event;
        if(type==1){
           
           System.out.println("Enter the number of stalls");
            int noOfStalls=sc.nextInt();
            event = new Exhibition(name,"Exhibition",costPerDay,noOfDays,noOfStalls);
            System.out.println(event.toString());
        }
        else if(type==2){
            System.out.println("Enter the number of seats");
            int noOfStalls=sc.nextInt();
            event = new StageEvent(name,"Stage Event", costPerDay,noOfDays,noOfStalls);
            System.out.println(event.toString());
        }
        else{
            System.out.println("Invalid input");   
        }
        
    }
}