Error initializing class instances

[fr0s1yjack]

hi,

heres my code for my main class:

public class Main {
        static UserInterface ui = new UserInterface();
         static Flight aFlight = new Flight();
        static Keyboard kb = new Keyboard();
         Seat seat = new Seat();
        char menuChoice = 0;


   
        public static void main(String[] args) {
            
            int menuChoice = 0;

            do {
            ui.displayMainMenu();
             menuChoice = kb.getInt("select: ");
                if(menuChoice == 1)

                    flightAdmin();
                
                else if(menuChoice == 2)

                    bookingsMenu("");
                
                else if(menuChoice == 3)

                    aFlight.viewSeat();

                
                else if(menuChoice == 4){

                   aFlight.displayFlightInfo();
                   kb.enterToContinue();
                }
              
            } while (menuChoice != 6);

        
}
        public static void flightAdmin(){

            char menuChoice = ' ';
            do{
              ui.displayAdminMenu();
              menuChoice = kb.getChar("select: ");
                if(menuChoice == '1')
                           enterFlightDetails();
                
                else if (menuChoice == '2')
                           changeFlightStatus();
                    
              } while (menuChoice != 'R');

        }

        public static void enterFlightDetails(){
            ui.displayFlightMenu();
            int menuChoice = 0;
              menuChoice = kb.getInt("Chose Flight: ");
                if(menuChoice == 1)
                           aFlight.setFlightDetails("SA123", "Glasgow", "Barra", "01-10-10" );

                 else if (menuChoice == 2)
                           aFlight.setFlightDetails("SA124", "Barra", "Glasgow", "02-10-10" );

                 else if (menuChoice == 3)
                           aFlight.setFlightDetails("SA234", "Glasgow", "Benbecula", "03-10-10" );

                 else if (menuChoice == 4)
                           aFlight.setFlightDetails("SA235", "Benbecula", "Glasgow", "04-10-10" );

                 else if (menuChoice == 5)
                           aFlight.setFlightDetails("SA345", "Glasgow", "Stornaway", "05-10-10" );

                else if (menuChoice == 6)
                           aFlight.setFlightDetails("SA346", "Stornaway", "Glasgow", "06-10-10" );

            
        }

        public static void bookingsMenu(String flightNumber){
                bookings(flightNumber);


        }
        public static void changeFlightStatus(){
            aFlight.setFlightStatus();
                System.out.println("Status Changed");
                    kb.enterToContinue();
        }

        public static void flightDetails(){
            ui.displayStatusMenu();
             int menuChoice = 0;
                do{
                  menuChoice = kb.getInt("select: ");
                     if(menuChoice == 1)
                           aFlight.displayFlightInfo();

                     else if (menuChoice == 2)
                           aFlight.displaySeatingPlan();

               } while (menuChoice != 3);


        }

        public static void bookings(String flightNumber){
            ui.displayBookingsMenu();
                     char menuChoice = 0;
                do{
                  menuChoice = kb.getChar("select: ");
                     if(menuChoice == '1')
                          aFlight.updateSeat(flightNumber, 0);

                     else if (menuChoice == '2')
                           aFlight.updateSeat(flightNumber, 1);

                     else if (menuChoice == '3')
                            aFlight.updateSeat(flightNumber, 3);
                     else if (menuChoice == '4'){
                            aFlight.seats[6].getSeatNo();
                            aFlight.seats[9].getSeatNo();
                            aFlight.seats[2].getSeatNo();
                     }

               } while (menuChoice != 'R');
        }

        

}

and here is my code for my flight class:

public class Flight {
         protected Seat[] seats = new Seat[24];
         String flightNumber;
         String departure;
         String arrival;
         String seatNumber = "";
         boolean available;
         boolean checkingIn;
         boolean boarding;
         boolean closed;
         boolean full;
         static String statusMessage = "";
         int freeSeats = 24;
         int reservedSeats;
         int bookedSeats;
         int rows;
         int cols;
         int i;
         BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
         String fileName = "h://MyDocuments/NetBeansProjects/ScotiaAirlines/Flights.txt";
          StringTokenizer s;
         File myFile;
         static Keyboard kb = new Keyboard();
         String Date;
        // String line = "";
         // line = read.readline();

       // s = StringTokenizer(line, ':');
        public  Flight(){
             //myFile = new File(fileName);
             for (i = 0; i < 24; i++) {
                 seats[i] = new Seat();
                /* int row = 1;
                 String col = "";
                 if(i%4 == 1){
                     col = "A";
                    }
                 else if(i%4 == 2){
                     col = "B";
                     System.out.println(row);
                   }
                 else if(i%4 == 3){
                     col = "C";
                     System.out.println(row);
                 }
                 else if(i%4 == 0){
                     col = "D";
                     System.out.println(row);
                 }
                 
                 seats[i].seatNo = row+col;
                 row++;
             }*/
             }
    }
         
         public void setFlightDetails(String FlightNumber, String departure, String arrival, String Date){

             this.flightNumber = FlightNumber;
             this.departure = departure;
             this.arrival = arrival;
             this.Date= Date;


         }

         public void setFlightStatus(){

             statusMessage = (kb.getString("Enter Flight Status: "));

         }

         public void viewSeat(){
           System.out.println("       A B C D");
               
            int i=0;
             for (rows = 0; rows < 6; rows++) {
                 System.out.print("   " + (rows + 1) + " - ");
                 for (cols = 0; cols  < 4; cols++) {
                    
                    System.out.print(seats[i].status + " ");
                   i++;

                }

                 System.out.println("");

             }
                kb.enterToContinue();
         }

          
         

         public void displayFlightInfo(){
             System.out.println("Flight Number = " + flightNumber);
             System.out.println("Daparture City = " + departure);
             System.out.println("Arrival = " + arrival);
             System.out.println("Date = " + Date);
             System.out.println("Flight Status = " + statusMessage);

             
         }

         public void displaySeatingPlan(){
    }

         public void loadFromFile(){


         }

         public void saveToFile(){
         }

         public void updateSeat(String flightNumber, int type){
             int r = 0;
             int c = 0;
             int position = 0;
             int seatStatus = 0;



             if(freeSeats == 0){
            System.out.println("Flight " + flightNumber + " is full");
            kb.enterToContinue();
            return;
        }else if (statusMessage.equals("Gate Closed")) {
            System.out.println("Flight " + flightNumber + " has closed");
            kb.enterToContinue();
            return;
        }
             seatNumber = kb.getString("Please Enter Seat Number to Update: ");

              try{
            r = Integer.parseInt(String.valueOf(seatNumber.charAt(0)));

            switch(seatNumber.charAt(1)){
                case 'A':case 'a':
                    c = 1;
                    break;
                case 'B':case 'b':
                    c = 2;
                    break;
                case 'C':case 'c':
                    c = 3;
                    break;
                case 'D':case 'd':
                    c = 4;
                    break;
            }
         } catch (Exception error) {
                System.out.println("INVALID SEAT NUMBER");
                kb.enterToContinue();
                return;
         }
             position = (((r - 1) * 4) + c) - 1;
             seatStatus = Integer.parseInt(seats[position].seatNo[0]);
             System.out.println(seatStatus);

         }






}

the error i am getting is:

java.lang.ExceptionInInitializerError
Caused by: java.lang.ArrayIndexOutOfBoundsException: 4
        at package.Flight.<init>(Flight.java:42)
        at package.Main.<clinit>(Main.java:14)
Could not find the main class: scotiaAirlines.Main.  Program will exit.

any ideas? :(

[Norm]

Can you read the stack trace shown in the error. It tells you what happened: ArrayIndexOutOfBoundsException: 4
The index value of 4 is outof bounds for the array.
The statement is at line 42 Flight.<init>(Flight.java:42) in Flight.java is where it happened.
The <init> shows that the code was in a constructor that was called from line 14 in Main: (Main.java:14)

Look at line 42 and see why the code allows the index to get to a value that is greater than the number of elements in the array.