O'Reilly - Java Message Service by Richard Monson-Haefel & David A. Chappell

Author:Richard Monson-Haefel & David A. Chappell [Monson-Haefel, Richard & Chappell, David A.]
Language: eng
Format: epub, pdf
Tags: creating distributed enterprise applications
Published: 2011-10-04T19:40:11.553823+00:00

Java Message Service

QWholesaler and QRetailer applications in separate command windows using the following command-line options:

java chap6.B2B.QWholesaler localhost username password java chap6.B2B.QRetailer localhost username password

In the QWholesaler application, enter the following two lines at the prompt (Item description, Old Price, New Price):

Surfboards, 999.99, 499.99

Wetsuits, 299.99, 149.99

The QRetailer application does not respond with a "Buy Order" until you hit the Enter key on the second line-item, because QRetailer knows that it can't buy 1000 surfboards without also buying 1000 wetsuits to go with them. Here is the code for the autoBuy( ) method, which contains this logic:

private void autoBuy (javax.jms.Message message){

int count = 1000;

try {

StreamMessage strmMsg = (StreamMessage)message;

String dealDesc = strmMsg.readString( );

String itemDesc = strmMsg.readString( );

float oldPrice = strmMsg.readFloat( );

float newPrice = strmMsg.readFloat( );

System.out.println( "Received Hot Buy: "+dealDesc );

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