Matrix File Reader

import java.io.*;
import java.util.*;
import java.util.Arrays;
public class Determinant
{
public static void main(String args[]) throws IOException
{
  int a [][] = new int[3][3];
  Scanner sf = new Scanner(new File("U:\\DataStructures\\Matrices\\Det3X3Data.in"));
  int maxIndx = -1;
  String text[] = new String[1000];
  while(sf.hasNext())
  {
  maxIndx++;
  text[maxIndx] = sf.nextLine( );
  }
  sf.close();
  int j = 0;
  int r1 = a.length;
  int c1 = a[0].length;
  do{
    if(text[j].equals("matrix")){
      j++;
    }
    else if(text[j].equals("row"))
      j++;
    else{
      if(matrix==1){
        while(!text[j].equals("matrix")){
          for(int k = 0; k<r1-1; k++){
            for(int i = 0; i<c1-1;i++){
              if(text[j].equals("row"))
                j++;
              else{
                int num = Integer.parseInt(text[j]);
                a[k][i]=num;
                System.out.println(a[k][i]);
                j++;
              }
            }
          }
        }
      }
    }
  }while(j<maxIndx);
}
}