4th

src/com/TicketManagement/Airplane.java

@@ -2,6 +2,11 @@ package com.TicketManagement;
 
 import java.util.ArrayList;
 
+/**
+ * this class is airplane class and airplane are collaborated
+ * with seat and flight classes directly
+ * @author Mohammad Kazemi
+ */
 public class Airplane {
     private String model;
     private ArrayList<Seat>seats;
@@ -12,23 +17,45 @@ public class Airplane {
         freeSeats=new ArrayList<>();
     }
 
+    /**
+     *
+     * @return the model of airplane
+     */
     public String getModel() {
         return model;
     }
 
+    /**
+     * this method adds seat to the airplane
+     * @param seat
+     */
     public void addSeat(Seat seat){
         seats.add(seat);
         freeSeats.add(seat);
     }
 
+    /**
+     *
+     * @return airplane seats
+     */
     public ArrayList<Seat> getseats(){return seats;}
 
+    /**
+     * this method reserve a seat for passenger
+     * @param seat
+     * @param passenger
+     */
     public void reserveSeat(Seat seat,Passenger passenger){
         if(seats.contains(seat)) {
             freeSeats.remove(seat);
             seat.setUser(passenger);
         }
     }
+
+    /**
+     *
+     * @return empty seats airplane
+     */
     public ArrayList<Seat>getFreeSeats(){return freeSeats;}
 
 }