You can find a simple iText code example at https://www.coderanch.com/how-to/java/ItextExample. It shows how to create a table, amongst other things. Be careful to consider which iText version you want to use - 2 or 5. They have different licenses, and iText 5 may require you to pay for it.
Ping & DNS - updated with new look and Ping home screen widget