O'Reilly - Java Message Service

}
}
// args[0]=topicName; args[1]=username; args[2]=password
Chat chat = new Chat(args[0],args[1],args[2]);
// Read from command line
BufferedReader commandLine = new
java.io.BufferedReader(new InputStreamReader(System.in));
// Loop until the word "exit" is typed
while(true){
String s = commandLine.readLine( );
if (s.equalsIgnoreCase("exit")){
chat.close( ); // close down connection
System.exit(0);// exit program
} else
chat.writeMessage(s);
}
} catch (Exception e){ e.printStackTrace( ); }
2.1.1 Getting Started with the Chat Example
Java Message Service
To put this client to use, compile it like any other Java program. Then start your JMS
server, setting up whatever topics, usernames, and passwords you want. Configuration of a
JMS server is vendor-dependent, and won't be discussed here.
The Chat class includes a main( ) method so that it can be run as a standalone Java
application. It's executed from the command line as follows:
java chap2.chat.Chat topic username password
The topic is the destination that we want to publish-and-subscribe to; username and
password make up the authentication information for the client. Run at least two chat
clients in separate command windows and try typing into one; you should see the text you
type displayed by the other client.
Figure 2.1. The Chat application
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