Himself wrote a small program to chat please advice

chat
....\chat
....\....\docs
....\....\....\allclasses-frame.html
....\....\....\deprecated-list.html
....\....\....\help-doc.html
....\....\....\images


....\....\....\index-all.html
....\....\....\index.html
....\....\....\net
....\....\....\...\sf
....\....\....\...\..\cscc
....\....\....\...\..\....\class-use
....\....\....\...\..\....\.........\ClientConnection.html
....\....\....\...\..\....\.........\ClientConnectionManager.html
....\....\....\...\..\....\.........\ClientConnectionRegistry.html
....\....\....\...\..\....\.........\CommunicationController.html
....\....\....\...\..\....\.........\CommunicationEvent.html
....\....\....\...\..\....\.........\CommunicationEventObservable.html
....\....\....\...\..\....\.........\CommunicationEventObserver.html
....\....\....\...\..\....\.........\ConnectionPortListener.html
....\....\....\...\..\....\.........\CsccException.html
....\....\....\...\..\....\.........\DataDispatcher.html
....\....\....\...\..\....\.........\DataEvent.html
....\....\....\...\..\....\.........\DataEventBaseObserver.html
....\....\....\...\..\....\.........\DataEventObservable.html
....\....\....\...\..\....\.........\DataEventObserver.html
....\....\....\...\..\....\.........\DataEventReceivingObserver.html
....\....\....\...\..\....\.........\ObjectReceiver.html
....\....\....\...\..\....\.........\ObjectSender.html
....\....\....\...\..\....\.........\Queue.html
....\....\....\...\..\....\.........\ServerConnection.html
....\....\....\...\..\....\.........\ServerConnectionManager.html
....\....\....\...\..\....\ClientConnection.html
....\....\....\...\..\....\ClientConnectionManager.html
....\....\....\...\..\....\ClientConnectionRegistry.html
....\....\....\...\..\....\CommunicationController.html
....\....\....\...\..\....\CommunicationEvent.html
....\....\....\...\..\....\CommunicationEventObservable.html
....\....\....\...\..\....\CommunicationEventObserver.html
....\....\....\...\..\....\ConnectionPortListener.html
....\....\....\...\..\....\CsccException.html
....\....\....\...\..\....\DataDispatcher.html
....\....\....\...\..\....\DataEvent.html
....\....\....\...\..\....\DataEventBaseObserver.html
....\....\....\...\..\....\DataEventObservable.html
....\....\....\...\..\....\DataEventObserver.html
....\....\....\...\..\....\DataEventReceivingObserver.html
....\....\....\...\..\....\examples
....\....\....\...\..\....\........\chatsystem
....\....\....\...\..\....\........\..........\ChatClient.html
....\....\....\...\..\....\........\..........\ChatServer.html
....\....\....\...\..\....\........\..........\class-use
....\....\....\...\..\....\........\..........\.........\ChatClient.html
....\....\....\...\..\....\........\..........\.........\ChatServer.html
....\....\....\...\..\....\........\..........\package-frame.html
....\....\....\...\..\....\........\..........\package-summary.html
....\....\....\...\..\....\........\..........\package-tree.html
....\....\....\...\..\....\........\..........\package-use.html
....\....\....\...\..\....\........\simplesystem
....\....\....\...\..\....\........\............\class-use
....\....\....\...\..\....\........\............\.........\Client.html
....\....\....\...\..\....\........\............\.........\PersonalInformation.html
....\....\....\...\..\....\........\............\.........\Server.html
....\....\....\...\..\....\........\............\Client.html
....\....\....\...\..\....\........\............\package-frame.html
....\....\....\...\..\....\........\............\package-summary.html
....\....\....\...\..\....\........\............\package-tree.html
....\....\....\...\..\....\........\............\package-use.html
....\....\....\...\..\....\........\............\PersonalInformation.html
....\....\....\...\..\....\........\............\Server.html
....\....\....\...\..\....\ObjectReceiver.html
....\....\....\...\..\....\ObjectSender.html
....\....\....\...\..\....\package-frame.html
....\....\....\...\..\....\package-summary.html
....\....\....\...\..\....\package-tree.html
....\....\....\...\..\....\package-use.html
....\

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