Opening PDF in browser using Adobe API - with mark up and comment features

Hey,  

Here is the scenario :   Firstly, the user has to review the file (say pdf) before approving it. I would like to open the pdf file in the browser directly for reviewing. Also, I want to add some mark up (sticky notes, etc) and comment features while reviewing. Using these features, the user can pin point the mistakes directly in the file and revert the file for changes if any.  

And as part of implementation, I would like to use Adobe java API to do the same. But I couldn't find any code snippets for using this API.  

Any kind of help would be appreciated. Thanks in advance.