message queue and Java

[chz013]

A message queue created by a task on a server on
IP address 192.168.1.1;
I like to write a java client application (on IP address 192.168.1.2);

1 - What's the basic concept of using message queue ?
2 - is there a code example on java network programming where
I could retrieve message from the message queue and display
the contents on the java client GUI ?
3- how is the client notified of when to retrieve msg from the
message queue ?
4 - how does the task know when to retrieve a message
sent from client and perform its task ?

any help is fully appreciated

 

[sedj]

If you mean JMS (Java Message Service) :

>>>> 1 - What's the basic concept of using message queue ?

Peer-2-Peer, or asynchronous Publish-Subscribe messaging using a JMS server, generally embedded within a J2EE compliant app server.


>>>> 2 - is there a code example on java network programming where
I could retrieve message from the message queue and display
the contents on the java client GUI ?

http://java.sun.com/j2ee/1.4/docs/tutorial/doc/index.html

>>> 3- how is the client notified of when to retrieve msg from the
message queue ?

EG - Publsh-Subscribe Queues :
The client looks up the Queue or Topic using JNDI, and writes a method in the client that recieves messages. The JMS server, on recieving a message from somewhere else then forwards the message to all clients that have subscribed.


>>>> 4 - how does the task know when to retrieve a message
sent from client and perform its task ?
The JMS server 's raison d^etre is to listen for incoming publish messages, and forward these to their client subscribers.

 

[chz013]

Sedj, thanks for your response. appreciate it.

1 - how is JMS different from the message queue created
by a Solaris task ?
2 - I need help/guidance on how to read messages
in message queue, which is created by a Solaris task,
and send them to display these messages on Java GUI.
How exactly do I do that or is that even possible ?
Any web site that would show such implementation example ?

 

[sedj]

Sorry, not familiar with Solaris message queues - maybe you could try the Solaris/UNIX forum ...