public void readFile() {
		 FileReader fileReader;
		try {
			fileReader = new FileReader(new File(FILENAME));
			BufferedReader br = new BufferedReader(fileReader);

			 String line = null;
			 // if no more lines the readLine() returns null
			 try {
				while ((line = br.readLine()) != null) {
					String[] row = new String[NUM_COLS];
					row[0] = line;
					row[1] = "";
					
					tblData.add(row);
				 }
			} catch (IOException e) {
				System.out.println("File Reading Problem");
				e.printStackTrace();
			}			
		} catch (FileNotFoundException e1) {
			System.out.println("File Not Found.");
			e1.printStackTrace();
		}
		
		latch = new CountDownLatch(tblData.size());

		 
	}