Filling a 2D array with characters using data input from file - Java

Question

I am trying to fill an array of chars using data input from file, while parsing the file I am also trying to store some values, but things are not working.

This is my code:

    File file = new File(filename); // filename is a user input
    Scanner fileScan = new Scanner(file);   

    // determine the board size
    ROWS = fileScan.nextInt();
    COLS = fileScan.nextInt();
    fileScan.nextLine();

    char[][] board = new char[ROWS][COLS];    

    for( int row = 0; row < board.length; row++){
        for (int col = 0; col < board[row].length ; col++){
            if (fileScan.hasNext()) {
                board[row][col]= fileScan.next().charAt(0);
                if(board[row][col] == START){
                    startingPoint = new Point(row, col);
                }                   
                if(board[row][col] == END){
                    endingPoint = new Point(row, col);
                }
            }
        }
    }
}

Given that then input file has

2 2
1 O O 
O O O 
O X 2 

this is what i get when I run it (when I try to print the array):

     O O 
     O X 

   java.lang.NullPointerException
    at java.awt.Point.<init>(Unknown Source)
    at CircuitBoard.getStartingPoint(CircuitBoard.java:139)
    at CircuitTracer.<init>(CircuitTracer.java:120)
    at CircuitTracer.main(CircuitTracer.java:36)

What is going wrong that prevents me from getting a value for the startingPoint ?

Answer 1

well, i have tried to run the code: taking in consideration my comment about data size 2x2 --> 3x3

it worked OK

the file should be

3 3
1 O O 
O O O 
O X 2

reading code is fine, and this is the array printing code i used

for( int row = 0; row < board.length; row++){
    for (int col = 0; col < board[row].length ; col++){
        System.out.print(board[row][col] + " ");
    }
    System.out.println("");
}

this was the output:

1 O O 
O O O 
O X 2 

so if this is what you need, just change 1st line in file to 3 3 and use the print code in this answer