#This is a chat server program which can provide service for mutiple users.#

There are descriptions of several most important class:

client.PoolClientUser

++This is a chat client .++

Dispatcher.DispatcherController

++This is a Dispatcher for processing the request from client.It can allocate port ,and return it back to client,make the client start a new connection to this port;++

pool.InPoolAdmin

++A pool which message can be taken from;++

pool.OutPoolAdmin

++A Pool which mananges the data to be sent;++

util.Sender

++A tool for sending;++

util.listener

++A tool for receiving;++