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.
There are quite some java open source ftp clients. Check how they implement the same problem you have.
In your exercise, do you want to focus on the ftp functionality, or are you focusing on GUI? In the second case, it might be easier to use an ftp library in stead of starting from scratch using the core java libraries.
Good luck, Jan
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