The HotelRoom class

Hotel.java

public class Hotel {
    public static void main(String[] args) {
        HotelRoom room = new HotelRoom();
        room.setGuestName("Joe");
        
        HotelRoom room2 = new HotelRoom();
        
        System.out.println(room.getGuestName());
        room.setGuestName("Melissa");
        System.out.println(room.getGuestName());
    }
}

class HotelRoom {
    
    private String guestname;
    
    HotelRoom() {
    }
    
    String getGuestName() {
        return this.guestname;
    }
    
    void setGuestName(String x) {
        this.guestname = x;
    }
    
    HotelRoom foo() {
        return this;
    }
}