title: Use both iText7 and iText 2.17
body: <p>Our Project has been using iText 2.17 for a long time. Now we would like to add digital signature to our pdfs and we prefer to use iText7. Can both iText &lt; 5.3 and 5.3+ libraries used together? Will there be a problem in class loader or all the packages different from its predecessor?</p>