How to validate JTable row

Hi Swing gurus,
I am working on JTable and need to validate table row.
Currently nth row is selected and I want to move on n-1th row but before making selection on n-1th row, I want to validate the nth row.
I have valueChanged method but that is fired when I do select n-1th row, instead of that I want to validate before selecting n-1th row.
please do share your thoughts on how I do validate row without moving to other row,
Thanks,

What does "validate" mean in this context?
- Do you want to validate the user's input while he is editing a cell?
- Or do you mean the user reads the row's contents and press some "validate" button?
If the latter, I seem to understand that you want to limit selection to only "the next non-validated row". In this case write a custom ListSelectionModel ; you can extend DefaultListSelectionModel, set it to SINGLE_SELECTION mode, and override addSelectionIntervall() and setSelectionIntervall() ; in those latter methods, just ignore (do not notify listeners) selection change if the rowIndex in argument must not be selectable.

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import java.awt.Component;
import java.awt.ComponentOrientation;
import java.awt.event.WindowAdapter;
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import javax.swing.DefaultListModel;
import javax.swing.JFrame;
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create foreign key relation ships
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reward if helpful
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How to validate JTable row

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