Passing parameters to Widgets through Java code

hi,

i want to pass parameters to yahoo widgets through java code. Eg, if we consider yahoo weather widget, then i have to pass the parameters country through java code. i also have to read the output given by widget through java code (which in this case is the weather for all the days for the current week).

This is an extremely urgent requirement, so quick and helpful reply will be highly appretiated.

thanks in advance