Change FocusTraversalKeys in JTable

Hi!
Is there any way I can change the default FocusTraversal key in a JTable from TAB to ENTER (or just add ENTER as a FocusTraversal key so that the TAB behavior remains the same)?
I've already done this for several components but it seems that JTable is a bit more complicated and that it handles focus traversal between cells internaly..
thanks!

thnx...but I already solved my problem. In case someone has the same problem:
final InputMap im = table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
final KeyStroke key = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, false);
im.put(key, "selectNextColumnCell");

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New to Java but with extensive Borland Delphi/C++ experience.
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in netbeans just right-click on one of the created rows in jtable
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Did you register your listener?
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Hi,
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Hi all,
I've created a customized JTable and component editors/renderers. I also created a class that dynamically inserts new rows into the JTable and can also move entire rows up and down in the JTable. Dynamic insertion is working fine, but I'm having a problem with dynamically moving the rows up and down. One of my implementations has a table with three columns, the first column is always a JLabel in a JPanel, the second column is a variety of custom editors, and the third column is a custom editor for a custom JButton. If I change the value of either column 2 or 3 and then try to change the rows position in the table (up/down), then the cell that was edited remains blank until I click anywhere in the row that has the blank cell. But if I edit either column 2 or 3 and then click on the cell for column 1 in the same row and dynamically change its position (up/down) then the cells are rendered correctly.
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So I tried updating the UI, but that didn't fix it.
Do you explictly call editor.stopCellEditing() ? That sets the new value to your model. I override all stop editing methods and make them call their cancelEditing counterparts... and during debugging I watch the model and it has the correct data. I think my table sometime gets stuck in an isEditing() == true state. But is there no way to say setEditing(false)?
From the BasicTableUI below... it seems like if my table gets into its editing state, the cells won't be rendered.
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Hi,
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URGENT !!! HOW CAN CHANGE DATA IN JTABLE!!!

My Program ....
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int row = e.getFirstRow();
int column = e.getColumn();
Object data = pLinhas.dataModel.getValueAt(row,column);
Object valor = pLinhas.dataModel.getValueAt(row,6);
System.out.println("Quantidade -" + data.toString());
System.out.println("Valor a Cobrar -" + valor.toString());
setValueAt(data,row,6);
public void setValueAt(Object value, int row, int col) {
System.out.println("Mudou ou nao");
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this dont work. When the method setValue() run, the java break.
the message are :
# An EXCEPTION_STACK_OVERFLOW exception has been detected in native code outside the VM.
# Program counter=0x77e94aa0
how can i change my data for a new data in jtable.
tx for help.

I had a problem similar to this. I was writing my own table model which would work sometimes and at other times fail similar to what you describe. I ended up printing out the source code to the DefaultTableModel and taking a look at it and then deciding to subclass that class and add my additional functionality as opposed to writing a completely new model and trying to duplicate the DefaultTableModel. My needs were relatively simple and the subclassing fixed the problem. I can change data with no problem in the displayed table. If you're not already subclassing and trying to write your own table model you may want to give this a try. I'd struggled with the problem for several days thinking I'd fixed it and having it come up again. I invested 2 hours doing the subclassing and the problem has never appeared since then. I know I just missed doing something in the table model I was trying to write but my schedule was tight and the subclassing offered a quick fix. Hope this helps!

How to listen for cell selection changes within a JTable

Problem: my table has 8 columns, with 4 of them containing very large text (up to 1000 chars). Solution is to set the initial size these columns so that the 1st 20 chars are visible, and if one of these columns gains focus/selection via mouse-clicking/tabbing/arrow keys, the entire text is shown in a JTextArea below the table.
I added a ListSelectionListener to the table, but this only informs me when the row selection has changed.
I added a FocusListener to the table, but this only informs me when the table gains/loses focus, not when it's been changed within.
I added a TableColumnModelListener to the TableColumnModel, but this only informs me when the column selection has changed.
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The LSL got me half way there, and the TCML got me the other half. Any ideas on how to combine?
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Walter Laan wrote:
Use both and call the same method which updates the text area based on the current selected (or focused == lead selection index) cell.Yeah - that's what I figured. I just didn't know if there was a magic bullet (i.e., a single listener) out there that I was missing.
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I have a blank JTable that will add rows as the user clicks the "add rows". My dilemma is some of the objects in the rows are comprised of JCheckBoxes. I need to know how to create an actual checkbox in those spots, without creating a sublass the extends DefaultTableModel. Also i can get everything to display on the table when the button is pushed but i just cant render the components.
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Thanks in advance
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Some code snippets.
private static DefaultTableModel model = new DefaultTableModel();
private JTable jTable = new JTable(model);
//below is what is called when the "add row" button has just been pushed
public static void setPricingTab()
    model.addRow(getRowInfo());
}//end public static void setPricingTab()
public static Object[] getRowInfo()
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    list[3]="Tuesday";
    list[4]="Wednesday";
    list[5]="Thursday";
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//im sure i should be rendering here or in the setPricingTab()
//but this is where i am stuck
}

Since you only post snippets of code its hard to tell whats wrong. Here is a simple example that I think does what you want:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableBoolean extends JFrame
    private final static String LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    JTable table;
    DefaultTableModel model;
    public TableBoolean()
        // Create table
        Object[][] data = { {"A", new Boolean(false)}, {"B", new Boolean(true)} };
        String[] columnNames = {"String","Boolean"};
        model = new DefaultTableModel(data, columnNames);
        table = new JTable(model)
            // Returning the Class of each column will allow different
            // renderers to be used based on Class
            public Class getColumnClass(int column)
                return getValueAt(0, column).getClass();
            public boolean isCellEditable(int row, int column)
                return true;
        // Add table and a Button panel to the frame
        JScrollPane scrollPane = new JScrollPane( table );
        getContentPane().add( scrollPane );
        JButton button = new JButton( "Add Row" );
        button.addActionListener( new ActionListener()
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                Object[] newRow = new Object[2];
                int row = table.getRowCount() + 1;
                newRow[0] = LETTERS.substring(row-1, row);
                newRow[1] = (row % 2 == 0) ? new Boolean(true) : new Boolean(false);
                model.addRow( newRow );
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    public static void main(String[] args)
        TableBoolean frame = new TableBoolean();
        frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
        frame.pack();
        frame.setVisible(true);
}

Need help detecting data changes in my jTable

I have created a jTable and a corresponding TableModel that extends the AbstractTableModel.
In my TableModel, I call fireTableCellUpdated within setValueAt.
I want to be able to say "if jTable has been edited then do something".
How do I do this? Do I have to implement an action listener? If I do then where do I implement that?
I've read the tutorial and the help several times but the tutorial is just a brief overview and does not go into what to do when you have extended the AbstractTableModel.
TIA,
Jennifer
Message was edited by:
jmc95825

I'm pretty much a novice to Java programming so I don't know why I'm using a custom table model. I'm just following my predecessor. My app has to be able to edit a .dbf file so I thought the table model has to be able to read the headers.
I've tried the code from the link you referenced and things are working great now.
Thanks again!

Change FocusTraversalKeys in JTable

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