This article aims at presenting how to create a servlet that sends a zip file to the user. We create here a html page with a form where you can enter an url. The servlet will get the content of this url (only the html page, not the images or other frames), create a zip file with it, and send you the file....more detail
With this sample code you can create and sign a PDF document with a PKCS12 certificat. When you signed a document you include in this document your numeric signature....more detail