Hi can someone help with code? It compiles correctly and everything works except

Question

Hi can someone help with code? It compiles correctly and everything works except for one thing. The output goes something like this:

Seating Chart:

A1 A2 A3 A4 A5 A6

B1 B2 B3 B4 B5 B6

C1 C2 C3 C4 C5 C6

D1 D2 D3 D4 D5 D6

E1 E2...

F1

G1

H1

I1

J1

"What seat would you like to reserve?"
A4

"Enter r to continue to reserve seats or q to quit and show seating chart:"
r

"What seat would you like to reserve?"
K2

"Enter r to continue to reserve seats or q to quit and show seating chart:"
q

As you can see, there's no K2 on the seating chart, it's supposed to display this (error not valid is supposed to come up whenever the user types in a seat that is not shown on the chart):

"Error not a valid seat, please enter a seat to reserve:"

Is it a mismatch error? Anyone please know how to correct this? Thanks

The code:

import java.util.Arrays;

import java.util.Scanner;

public class Reserve {

String[][] seatArray=new String[10][6];

char[] seatNumber={'A','B','C','D','E','F','G','H','I','J'};

static Scanner scan=new Scanner(System.in);

public static void main(String[] args) {

String selectedSeat;

String flag="";

Reserve r =new Reserve();

System.out.println("Seating Chart");

System.out.println("----------------------------------------------");

r.initializeSeats();

do {

System.out.println("What seat would you like to reserve ?");

selectedSeat=scan.nextLine();

int row=0;

for(int i=0;i<10;i++) {

if(r.seatNumber[i]==selectedSeat.charAt(0)) {

row=i;

break;

}

}

char a=selectedSeat.charAt(1);

int column=Character.getNumericValue(a)-1;

if(!r.seatArray[row][column].equals("X")) {

r.seatArray[row][column]="X";

}

else {

System.out.println("Error, Not a valid seat Please enter valid seat");

continue;

}

System.out.println("Enter r to reserve more seats or q to quit and view a chart:");

flag=scan.nextLine();

}while(!flag.equals("q"));

System.out.println("Reserved Seating Chart");

System.out.println("----------------------------------------------");

r.displayReservedChart();

}

public void initializeSeats() {

for(int i=0;i<10;i++) {

for(int j=0;j<6;j++) {

seatArray[i][j]=""+seatNumber[i]+""+(j+1);

System.out.print(seatArray[i][j]+" ");

}

System.out.println("");

}

}

public void displayReservedChart() {

for(int i=0;i<10;i++) {

for(int j=0;j<6;j++) {

System.out.print(seatArray[i][j]+" ");

}

System.out.println("");

}

}

}

Explanation / Answer

you did not account for row being invalid http://ideone.com/rqpwWr

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