Maintain Jtable state!

Hi,
In my software I browse a lot of files, csv & xls files and load them onto JTable. Each jtable is in different JInternalFrame, now the problem is when I refine the data. How am I suppose to treat each Jtable as different and maintain its state?
Eg. If there are two files FileA and FileB opened, and I want to add 5 to each value in FileA and add 8 in FileB then how do I do that simultaneously. The logic for calculating will be the same for both but they should be opening different panes for each and the calculation command is not given together they are given separately in their frames simultaneously by right clicking on the jtable

Create a loop and updated each table separately.
Other than that you question is too vague to give a better reply.

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