Applet and servlet Communication

hi all,

I am facing a problem.

I have an applet which displays a road map.This map

basically displays the position of a vehicle on a map

of road (in the background as a diff layer). the position of the

vehicle is updated using a servlet which provides the applet

with the latest co-ordinates to display on the applet-map.

the applet is refreshed every 4 seconds..but the problem

here is every-time the applet is refreshed all the layers

get refreshed and this causes a major problem in the

response time. Is there someway that i can get only the

position of the applet of the vehicle updated without affecting

the rest of the applet-map.

we must remember that the data accessed by the client(applet)

resides on the remote server which might be 100 of miles away.

Or is there some other way of doing this..for eg using rmi or

something else. All that i want is that the applet shd seem as a

continuously running application on a browser but also display

real-time data.

Thanx in advance.

Anoop

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