Best way to modify PDFs using iText?

Scenario: Clients will be providing me with PDF-templates. I need to programmatically fill these with information. Question: What is the best way to do this?

Say for example a client sends me the beautiful template seen below and I want to fill in the Price Field. The research I've done so far has led me to believe that there is 开发者_Go百科no way for me to programmatically 'understand' where the Price Field is, is this correct? A workaround I've heard of is creating another template on top of the existing template. I want to make this as hassle-free as possible, is there a program that let's me create a template easily using say drag-and drop forms, with another template as a base? Then perhaps I could load the clients template, then my own created template, populate that with values and merge it all into one PDF. Is this a sensible approach?

Very thankful for any thoughts or suggestions.

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try to use birt viewer plugin for eclipse reporting tool.. you can generate reports on templates .. and there is automatically pdf creator..

http://www.eclipse.org/birt/phoenix/deploy/viewerUsage.php

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This worked for me.