error: missing return statement.

import  java.util.*;
import  java.text.*;
import java.io.*;
import java.util.Arrays;


class Hotel {

      private  String name;
      private int rooms;
      private  int booked;
      private  String[] roomTypes = {"Twin","Double", "Suite"};
      public  Hotel() {}


       public  Hotel (String name, int rooms, int booked) {
        super();
        this.name = name;
        this.rooms = rooms;
        this.booked = booked;
    }


    public  void setName (String Name) {
        name = Name;
    }

    public  String getName () {
            return name;
        }


    public int Setroom(int Room){
        rooms = Room;   
    }

    public int getRoom (){
        return rooms;
    }

    public void setBooked (int Booked){
         booked = Booked;
    }


    public int getBooked (){
        return booked;
    }

     public int checkAvailability (){
        return this.rooms - this.booked;
    }

    public  void getRoomTypes (String RoomTypes){
        for(int i = 0; i < roomTypes.length; i++) {

        } 
    }



    public static void main(String[] args){

        Hotel hotel = new Hotel();
        hotel.setName("Hamilton");
        hotel.Setroom(40);
        hotel.setBooked(22);    
    }

}