מימוש interface

[Bary15]

מימוש interface

נתקלתי בשאלה ברשת של מימוש hotel manager interface - מישהו יכול לעלות את הפתרון שלו עם hashMap?
מקבלים interface + Reservation class ואמורים לממש ב-class אחר

זה הלינק לשאלה -

[URL]https://codereview.stackexchange.com/questions/176487/implementing-an-hotelmanager-interface-in-java[/URL]

package test;


import java.time.LocalDate;
import java.util.List;


publicinterfaceHotelManager{


/**
     * Sets the number of rooms in the hotel.
     */
void setNumberOfRooms(int numRooms);


/**
     * Tries to add a reservation to the system.
     * Reservation will be added successfully only if during the whole time frame from its fromDate to its toDate there is
     * a free room in the hotel.
     * @param reservation reservation to add
     * @return true if added reservation successfully. False otherwise.
     */
boolean makeReservation(Reservation reservation);


/**
     * Cancels the reservation with the given id.
     * @param reservationId id of reservation to cancel
     */
void cancelReservation(int reservationId);


/**
     * Get the reservation with the given id.
     * @param reservationId id of reservation to fetch.
     * @return Reservation with the given id or null if no reservation with that id exists.
     */
Reservation getReservation(int reservationId);


/**
     * Return the number of available rooms on the given date.
     * @param dateToCheck date to check number of available rooms
     * @return number of available rooms on the given date.
     */
int getNumberAvailableRooms(LocalDate dateToCheck);


/**
     * Get the price of all reservations that start on or after the given from date AND end on or before the given to date
     * (if a reservation starts before the given from date or ends after the given to date don't count it)
     * @return the sum of prices of all reservations that start and end during the given timeframe
     */
int getPriceOfReservations(LocalDate from,LocalDate to);


/**
     * Gets all the reservations that start on or after the given from date AND end on or before the given to date
     * sorted by price in an ASCENDING order.
     */
List<Reservation> getAllReservationsSortedByPrice(LocalDate from,LocalDate to);


/**
     * Gets all the reservations that start on or after the given from date AND end on or before the given to date
     * sorted by date in an ASCENDING order.
     */
List<Reservation> getAllReservationsSortedByDate(LocalDate from,LocalDate to);


}

וזה ה- Reservation

privatefinalint id;
privatefinalLocalDate fromDate;
privatefinalLocalDate toDate;
privatefinalint price;


publicReservation(LocalDate fromDate,LocalDate toDate,int price){
this.id = generateRandomId();
this.fromDate = fromDate;
this.toDate = toDate;
this.price = price;
}


publicint getId(){
return id;
}


publicLocalDate getFromDate(){
return fromDate;
}


publicLocalDate getToDate(){
return toDate;
}


publicint getPrice(){
return price;
}


privateint generateRandomId(){
return(int)(Math.random()*10000000);
}


publicString toString(){
return"id: "+ id +", from: "+ fromDate +", to: "+ toDate +", price: "+ price;
}


}

 

[rontech]

אתה צריך ייעוץ של מומחה

 

[Bary15]

אשמח לפתרון - לא הצלחתי