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JTabel value changed - inseert to db.

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hi guys,

Quick question: Say I have a JTable 20x10 (big) and the values are inserted to a database (raw by raw - that is, evrery raw is inserted with the same key:

myKey a b c d e g h
myKey i o i k j h g t f
myKey u u u u u u u o


(the user can change the jtable)

MY QUESTION IS: say the user has changed just one value in the table and added another raw - how could i just update the value he changed and insert the new raw?

(for the new raw, i guess firstly I have to count the num of raws and then see if there's any diff - unless you have a better idea - but what about the change of value???)

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