code: public boolean isMarkedAsRead() throws IOException, ClassNotFoundException {
          List<SyndEntry> entryList = new ArrayList<>();
  
          for (File file : getSerializedMOTFiles()) {
              FileInputStream fileIn = new FileInputStream(file);
              ObjectInputStream in = new ObjectInputStream(fileIn);
              entryList.add((SyndEntry) in.readObject());
              in.close();
              fileIn.close();
          }
  
          return entryList.contains(entry);
      }
docs: Checks if this message of the day is marked as read using
  {@link #markAsRead()}.
  
  @return {@code true} if this message of the day has been marked as read
  using {@link #markAsRead()} and {@code false} otherwise.
  @throws IOException            If the info that this message of the day is marked as read
  cannot be written to the computers hard disk
  @throws ClassNotFoundException This exception occurs if you did not add the
  <a href="https://rometools.github.io/rome/index.html">ROME
  library</a> to your classpath. If you use maven don't worry
  about this exception as maven already added the library for
  you.