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B&S question on data access and gui

 
fei lin
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Do I have to implement add() method provided by SUN? Because I was not planning to do any add on gui. and by update(), can I just prompt the user to enter customer ID to book the contractor.

1 more. why the field name is sub contractor name not contractor name?

sorry for asking so many questions, i am starting out on this cert. and have alot of confusion.
 
Musab Al-Rawi
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Fei,

you have to implement all methods provided by Sun's interface regardless of whether you will support them in the GUI or not (you shouldn't really support them in the GUI).
 
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