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JTable updation problem

Krithika Beri
Ranch Hand

Joined: Sep 11, 2012
Posts: 36
I am using Netbeans for my current project. I require to update a jtable based on what the user selects from a JTree consisting of all the files in his computer. The problem is that this JTable is not getting updated.
I am creating a new model and adding it each time. When I say getValueAt(x,Y) from the new value, it is giving me proper updation but this is not visible in UI. Please help

Nam Ha Minh
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Joined: Oct 31, 2011
Posts: 502

All these stuffs are redundant:

Simply call the method fireTableDataChanged() at the end:


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Krithika Beri
Ranch Hand

Joined: Sep 11, 2012
Posts: 36
I tried that. It did not help
Darryl Burke

Joined: May 03, 2008
Posts: 5115

The only method needed is JTable#setModel(...). You do not need to call fireTableDataChanged(). If you're not seeing the new model's data in the table, chances are you're setting the model to the wrong table.

To get better help sooner, post a SSCCE (Short, Self Contained, Correct (Compilable), Example) that demonstrates the problem.

luck, db
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m Korbel
Ranch Hand

Joined: Jun 19, 2012
Posts: 174
- agreed with Darryls request for SSCCE, otherwise everything here could be shots to the dark, including my post here

- never to call simple useless

a) jTable1.fireTableDataChanged() for DefaultTableModel, this and all notifiers are implemented correctly

b) jTable1.validate(); do nothing in your case

c) jTable1.repaint(); do nothing in your case, even for doLayout(special casses for determine of setPreferrdSize) could eb usefull

d) jTable1.updateUI(); do nothig in your case, because you dont created CustomUI for JTable

- depends of case if

a) selection from JTree add a new row to JTable, then to add a new row to the DefaultTableModel

b) selection update some of row(s), then to JTable#setValueAt(valid for DefaultTableModel)
I agree. Here's the link:
subject: JTable updation problem
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