private static void parseLineOfSudokuBoard(SudokuFile sf, String[] values, int rowNumber) {
   // writes values to the row set in param rowNumber
   if (sf.getBoard() == null) {
     sf.setBoard(new int[sf.getN()][sf.getN()]);
   }
   int[][] board = sf.getBoard();
   for (int i = 0; i < values.length; i++) {
     board[rowNumber][i] = Odometer.odometerToInt(values[i]);
   }
 }
  public static SudokuFile readFile(String filePath) {
    // Get filePath. from path and filename. If path is null,
    // it'll default to the current directory

    try (Reader reader = new FileReader(filePath)) {
      try (BufferedReader br = new BufferedReader(reader)) {
        SudokuFile sF = new SudokuFile();
        String line;
        int lineCounter = 0;

        while ((line = br.readLine()) != null) {
          String[] lineParts = line.split("\\s+");
          if (lineCounter == 0) {
            setSudokuFileParameters(sF, lineParts); // parameter line: contains p, q, N
          } else {
            parseLineOfSudokuBoard(
                sF, lineParts, lineCounter - 1); // obo due to parameters taking up first line
          }
          lineCounter++;
        }
        if (lineCounter == 0) {
          System.out.println("Input file \"" + filePath + "\" was empty");
        } else if (lineCounter < sF.getN()) {
          System.out.println(
              "Incomplete or Emtpy board for file " + filePath + ". Please be advised");
        }
        return sF;
      }
    } catch (IOException e1) {
      // TODO Auto-generated catch block
      System.err.print("Invalid file:" + filePath + ". Skipping to the next file.\n");
    } catch (NumberFormatException e2) {
      e2.printStackTrace();
    }
    // Something wrong happened if it reaches here
    return new SudokuFile();
  }