if ((Integer) arg == 100) {
final FileIndexer fileIndexer = (FileIndexer) o;
final File file = fileIndexer.getFile();
try {
final LineReader lineReader = new LineReader(file, fileIndexer.getIndex());
final JTailModel model = new JTailModel(file, lineReader);
this.jTailMainModel.add(model);
} catch (FileNotFoundException e) {
ExceptionHandler.handle(e, UIMessage.ERROR_FILE_NOT_FOUND, file.getName());
} catch (Exception e) {
ExceptionHandler.handle(e, UIMessage.ERROR_GENERIC_MESSAGE);