How do I communicate between two clients that are on different machines on a network using JMS? I want to use a standalone application for communicating between the machine and I want to pass the message using JMS.

You can make two JMS client applications, say AppA and AppB. Make AppA listen to topic ‘forA’. Make AppB listen to topic ‘forB’. If AppA sends a message to topic ‘forB’, AppB will receive it. If AppB sends a message to topic ‘forA’, AppA will receive it. For sample code etc, try downloading SonicMQ (as a JMS server) and go through the samples.