Mine

String filename = source.getSelectedValue() + ".txt", line;			int size;						try {				File db = new File(filename);				size = 0;								jLiLevelsModel.clear();				BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(db)));				line = input.readLine();				while(line != null) {					size += line.length();					if(!line.substring(0,1).equals("#") && !line.substring(0,1).equals(" ")) {						jLiLevelsModel.addElement(line);					}					line = input.readLine();					System.out.println(size);				}			} catch (Exception e) {				//			}