How to identify a specific object that changed in a data table?

I have a data table in my jsf page which populate by myList (a property of type List<myObject> in myBean) that contains a list of myObject objects.
Within data table, the 'amount' property of myObject is in a h:inputText named 'amountText'.
How can I recalculate another property (for example 'cost') of the specific myObject within one of the
data table rows whenever user change the value of 'amountText' ?

Hi Roger,
I guess, it is up to your choice about design how you want to implement.
you have two ways....
1) Use valueChangeListener attribute of the text field, as it will be called for the row of the database on which the bind property value is actually changed.
2) Not prefered, but you can use setterMethod of amount in the your object, and can compare its new value with the old one and can decide the consequence.
Please let me know, if it solves your concern or you have a different concern.

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here the full example code...
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
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- MaxxDmg...
- " He who never sleeps... "

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