This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Java-based tutorials and books will probably involve a framework like JXTA. It doesn't make sense to reinvent the wheel, unless, of course, this is an academic exercise. Google turned up one P2P article that doesn't rely on a framework.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com