public boolean add(String title, String author)
  {
    LibraryBook add;
    LibraryBook temp;
    add = new LibraryBook(title, author);
    bookList.add(add);
    if(bookList.size() > 1)
      System.out.println("The book with title \"" + title + "\" has been added to the library.");
    {
      for(int i = 0; bookList.size() > i; i++)
      {
        for(int j = i + 1; bookList.size() > j; j++) //checking whether the next books are followed by the book and updating it.
        {
          if(bookList.get(i).getAuthor().compareTo(bookList.get(j).getAuthor()) > 0 || 
             (bookList.get(i).getAuthor().equals(bookList.get(j).getAuthor()) &&
              bookList.get(i).getTitle().compareTo(bookList.get(j).getTitle()) > 0 ))
          {
            temp = bookList.get(i);
            bookList.set(i, bookList.get(j));
            bookList.set(j, temp);
          }
        }
      }
    }
    return true;
  }