public static int[][] readMatrixFromFile() throws FileNotFoundException {


		Scanner input = new Scanner (new File("D:\\Eclipse\\matrix.txt"));
		// pre-read in the number of rows/columns
		int rows = 0;
		int columns = 0;
		while(input.hasNextLine())
		{
		    ++rows;
		    Scanner colReader = new Scanner(input.nextLine());
		    while(colReader.hasNextInt())
		    {
		        ++columns;
		    }
		}
		int[][] a = new int[rows][columns];

		input.close();

		// read in the data
		input = new Scanner(new File("src/array.txt"));
		for(int i = 0; i < rows; ++i)
		{
		    for(int j = 0; j < columns; ++j)
		    {
		        if(input.hasNextInt())
		        {
		            a[i][j] = input.nextInt();
		        }
		    }
		}
		return a;
	}