opensource java framework for P2P

I want to distribute the files in network in quick time.Consider that my network has 100 PC. 1 PC will act as server.Server will hold all files.Now if server wants to send file to certain number of pcs in network then it should happen in quick time.

So i am using following strategy :

1. Server sends command all intended pcs to get files from their nearest location.
2. Initially Server sends file to 2 pcs.pc1 and pc2
3. Now all other pcs will pick the file from the nearest availabe pcs.(server, pc1 and pc2)
4. This continues

Which java framework is best for this task?

You can look at the JXTA project.

The AntHill Project also seems like a good place to start.