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PDFhelp is a replacement for the JavaHelp system based on the LGPL version of JPedal PDF library. It lets you to display PDF help content from the web from within your application, using only a few lines of code.
There are some tutorials (naturally in PDF format) on the downloads page.
JRand is an API for validating request parameters in web applications.
Validation of parameters is usually a hectic and time consuming process.
For documentation and tutorials and how to use Jrand go to : http://www.khaledinho.com/main/?page_id=322
JSDo5an is simple JavaScript library for validating user input. All you have to do is to specify the validation rules.Documentation, tutorials on how to use the API can be found at http://www.khaledinho.com/main/?page_id=43
iText Programming Tutorials. Example code and detail explanation on how to generate Adobe PDF document with iText API. Example of AcroForm, bookmark, anchor, insert images, generate PDF with Java App, JSP or Servlet, create PDF table and etc.