how do i dynamically create pdfs on java/google app engine

How can I create a PDF dynamically in a Java based Google App Engine application?

I want this to be done from a java-based application (I 开发者_如何学Pythonsaw similar questions asked already but those were for Python based applications).

Regards, Arvind.

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See this for a write up of some options.

EDIT: http://pdfjet.com/ appears to be the only library that is fully AppEngine-compatible.