How to detect data change in Jtable?

[Gobindap]

I am using JTable to store data. How to detect whether any cell contents is changed or not? I want to update data while clicking a button. If i update without detecting the change then data with no change are also required to update. So I want to update only those data whose contents are changed.

Data can also be update while changing the cursor focus but I think it is not better because it requires frequently communication with database.

So, Please help me to overcome this problem.
Thank you for your kind co-operation.

[r035198x]

Consider a table model listener: http://docs.oracle.com/javase/tutori...llistener.html