public String printAsCSV()
	{
		String results = "";

		ArrayList<String> row;

		for(int r = 0; r < this.ROWS; r++)
		{
			row = this.getRow(r);

			for(String s : row)
				results = results + s + ",";

					results = results + "\n";
		}

		// trim trailing newline
		results = results.substring(0,results.length()-1);
		return results;	
	}