Define a class with following specifications.
class name: Hotel
Member variables:
String name – stores name of customer name
long mobno – stores mobile number
int days – stores number of days customer stayed in hotel
int bill – stores customer bill

Member method:
void input() – input values using Scanner class methods only
void charge() – calculate bill as per the following criteria

days	charge/day
first 3 days	1000 Rs/ day
next 4 days	900 Rs/day
> 7 days	800 Rs/day

bill = bill + gst (18% of bill)

void print() - Display customer name, mobile number and bill.

Invoke all the above methods in main method with the help of an object.

import java.util.Scanner;

class Hotel {
    String name;
    long mobno;
    int days;
    int bill;

    void input() {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter customer name: ");
        name = sc.nextLine();
        System.out.print("Enter mobile number: ");
        mobno = sc.nextLong();
        System.out.print("Enter number of days stayed: ");
        days = sc.nextInt();
    }

    void charge() {
        if (days <= 3) {
            bill = days * 1000;
        } else if (days <= 7) {
            bill = (3 * 1000) + (days - 3) * 900;
        } else {
            bill = (3 * 1000) + (4 * 900) + (days - 7) * 800;
        }
        bill += bill * 0.18;
    }

    void print() {
        System.out.println("Customer Name : " + name);
        System.out.println("Mobile Number : " + mobno);
        System.out.println("Total Bill    : Rs " + bill);
    }

    public static void main(String[] args) {
        Hotel h = new Hotel();
        h.input();
        h.charge();
        h.print();
    }
}