We need a client side popup in an intranet application.
A window should pop up on all the clients when another client or a server sends it a message.
This problem can also be expanded to allow a client to send a message to a specific client alone, rather than all the clients, but that is left to the reader as an exercise.
Fig 2 Interpretation of producer – consumer model in the RMI space
The blue lines in the above figure indicate what we are doing beside simple remote callbacks, that differentiate our solution from a client server paradigm.
Each client becomes a true distributed object with the ability to allow other objects to directly reference it and allow for bi-directional communication.
To cover this problem we will write a server object whose task is to:
Register a client as soon as the client is loaded in any browser
Remove them from the list when they are closed, thereby maintaining a listing of all clients existing at any point of time
Notify the clients of the message
Of course the process for making a remote object remains the same:
Sameer Tyagi is a Software Engineer with several years of programming experience in iNet application development and has conducted multiple training workshops in Java. Besides holding an Engineering degree in Electronics he is a Sun Certified Java 1.1 Programmer.
Email: sameertyagi@usa.net
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