O'Reilly - Java Message Service

}
System.out.println ("\nBad Deal- Not buying.");
}
} catch (javax.jms.JMSException jmse){
jmse.printStackTrace( );
}
}
private void exit(String s){
try {
if ( s != null &&
s.equalsIgnoreCase("unsubscribe"))
{
subscriber.close( );
session.unsubscribe("Hot Deals Subscription");
}
connect.close( );
} catch (javax.jms.JMSException jmse){
jmse.printStackTrace( );
}
System.exit(0);
}
public static void main(String argv[]) {
String broker, username, password;
if (argv.length == 3){
broker = argv[0];
username = argv[1];
password = argv[2];
} else {
System.out.println("Invalid arguments. Should be: ");
System.out.println
("java Retailer broker username password");
return;
}
}
Retailer retailer = new Retailer(broker, username, password);
try {
System.out.println("\nRetailer application started.\n");
// Read all standard input and send it as a message.
java.io.BufferedReader stdin =
new java.io.BufferedReader
( new java.io.InputStreamReader( System.in ) );
while ( true ){
String s = stdin.readLine( );
if ( s == null )retailer.exit(null);
else if ( s.equalsIgnoreCase("unsubscribe") )
retailer.exit ( s );
}
} catch ( java.io.IOException ioe ){
ioe.printStackTrace( );
}
Java Message Service
The main( ) method of Retailer is much like the main( ) method of Wholesaler. It creates
an instance of the Retailer class and passes it the information it needs to set up its
publishers and subscribers.
The constructor of the Retailer class is also similar to that of the Wholesaler class, except
that it creates a durable subscription using the "Hot Deals" topic. Durable subscriptions
will be discussed in more detail later in this section.
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