code: @Override
      public List<MonitorLine> getLinesFrom(Object actual) throws Exception {
          //TODO Enhance line retrieve to get last lines directly
          String line;
          Integer currentLineNo = 0;
          final List<MonitorLine> result = new ArrayList<MonitorLine>();
          BufferedReader in = null;
          try {
              in = new BufferedReader(new FileReader(getFilename()));
  
              Integer startLine = (actual == null) ? 0 : (Integer) actual;
              //read to startLine
              while (currentLineNo < startLine + 1) {
                  if (in.readLine() == null) {
                      throw new IOException("File too small");
                  }
                  currentLineNo++;
              }
              //read until endLine
              line = in.readLine();
              while (line != null) {
                  result.add(new MonitorLine(currentLineNo, line));
                  currentLineNo++;
                  line = in.readLine();
              }
          } finally {
              try {
                  if (in != null) {
                      in.close();
                  }
              } catch (IOException ignore) {
              }
          }
          return result;
      }
docs: Get the file lines since the actual until the last.
  
  @param actual Actual line identification
  @return The list of lines
  @throws Exception