rmi
Class ChatClient

java.lang.Object
  java.rmi.server.RemoteObject
      java.rmi.server.RemoteServer
          java.rmi.server.UnicastRemoteObject
              rmi.ChatParticipant
                  rmi.ChatClient

All Implemented Interfaces:

java.io.Serializable, java.rmi.Remote, ChatClientInterface, ChatParticipantInterface

public class ChatClient
extends ChatParticipant
implements ChatClientInterface

Class for client for simple chat program. An object of this class provides the functionality needed to communicate with the server and other clients; the user interface is provided by an object of a class implementing the ChatClientUI interface.

See Also:

Serialized Form

Field Summary

Fields inherited from class rmi.ChatParticipant

clients, errorPrefix, serverPrefix

Fields inherited from class java.rmi.server.RemoteObject

ref

Constructor Summary

ChatClient(java.lang.String name, java.lang.String serverHost, ChatClientUI ui)
Constructs client object, querying server for a list of other clients and displaying this information.

Method Summary

void	addClient(ChatClientInterface c) Adds client, displaying some info about the new client.
void	display(java.lang.String message) Displays message, using whatever method is provided by the user interface for the client.
java.lang.String	getAddress() Gets client's hostname/IPA.
java.lang.String	getMessagePrefix() Gets prefix for messages broadcast by this object.
java.lang.String	getScreenName() Gets client's screen name.
void	removeClient(ChatClientInterface c) Removes client, displaying some info about it.
void	shutdown() Shuts down, notifying server that we're leaving.
void	startup() Starts up.

Methods inherited from class rmi.ChatParticipant

broadcast

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface rmi.ChatParticipantInterface

broadcast

Constructor Detail

ChatClient

public ChatClient(java.lang.String name,
                  java.lang.String serverHost,
                  ChatClientUI ui)
           throws java.rmi.RemoteException,
                  java.rmi.NotBoundException,
                  java.net.MalformedURLException

Constructs client object, querying server for a list of other clients and displaying this information.

Parameters:

name - screen name

serverHost - host where server is running

ui - user interface for client (provides something on which to display messages, etc.)

Throws:

java.rmi.RemoteException

java.rmi.NotBoundException

java.net.MalformedURLException

Method Detail

addClient

public void addClient(ChatClientInterface c)
               throws java.rmi.RemoteException

Adds client, displaying some info about the new client.

Specified by:

addClient in interface ChatParticipantInterface

Overrides:

addClient in class ChatParticipant

Parameters:

c - client to add

Throws:

java.rmi.RemoteException

removeClient

public void removeClient(ChatClientInterface c)
                  throws java.rmi.RemoteException

Removes client, displaying some info about it.

Specified by:

removeClient in interface ChatParticipantInterface

Overrides:

removeClient in class ChatParticipant

Parameters:

c - client to remove

Throws:

java.rmi.RemoteException

getScreenName

public java.lang.String getScreenName()
                               throws java.rmi.RemoteException

Gets client's screen name.

Specified by:

getScreenName in interface ChatClientInterface

Returns:

screen name

Throws:

java.rmi.RemoteException

getAddress

public java.lang.String getAddress()
                            throws java.rmi.RemoteException

Gets client's hostname/IPA.

Specified by:

getAddress in interface ChatClientInterface

Returns:

hostname and IPA, in string form

Throws:

java.rmi.RemoteException

display

public void display(java.lang.String message)
             throws java.rmi.RemoteException

Displays message, using whatever method is provided by the user interface for the client.

Specified by:

display in interface ChatParticipantInterface

Parameters:

message - message to display

Throws:

java.rmi.RemoteException

startup

public void startup()
             throws java.rmi.RemoteException

Starts up.

Specified by:

startup in interface ChatClientInterface

Throws:

java.rmi.RemoteException

shutdown

public void shutdown()
              throws java.rmi.RemoteException

Shuts down, notifying server that we're leaving.

Specified by:

shutdown in interface ChatClientInterface

Throws:

java.rmi.RemoteException

getMessagePrefix

public java.lang.String getMessagePrefix()

Gets prefix for messages broadcast by this object.

Specified by:

getMessagePrefix in class ChatParticipant

Returns:

prefix for messages (screen name)