RE: Add new lines to the JTable

[Deblauwe, Wim]

Title: RE: Add new lines to the JTable

Hi,

first of all, you need to call fireTableDataChanged() from _within_ your TableModel incrementRow() method:

class MyTableModel extends AbstractTableModel {
  //other methods here
  ....

  void incrementRow() { //notice the lowercase i, this is convention in java!
        System.out.println("IncrementRow()");
        nRows++;
        fireTableDataChanged();
    }  
}

I think the setValueAt() of the model is only called when pressing ENTER, so you confirm the change you did.

regards,

Wim

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: woensdag 4 februari 2004 16:30
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: Add new lines to the JTable

Thanks for this answer, I look in the table and I never remember to go to
the TableModel.
 
Onether question. Know I have the Table with the cells editable.
If I chose another column the setValueAt is called.
If I press the button the setValueAt is not called.
If I go to the TextArea the setValueAt is not called.
if I close the Frame the setValueAt is not called.
This isn't suposed?
 
Simple code. I'm seeing just the output.
 
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import javax.swing.*;
import javax.swing.table.AbstractTableModel;
 
class MyTableModel extends AbstractTableModel {
    int nRows = 5;
    public int getRowCount() {
        return nRows;
    }
 
    public int getColumnCount() {
        return 4;
    }
               
    public Object getValueAt(int arg0, int arg1) {
        return new Integer(arg0*arg1);
    }
   
    void IncrementRow() {
        System.out.println("IncrementRow()");
        nRows++;
    }
   
    public boolean isCellEditable(int nRow, int nCol) {
        System.out.println("isCellEditable(int nRow, int nCol)");
        return true;
    }
 
    public void setValueAt(Object arg0, int arg1, int arg2) {
        System.out.println("setValueAt(Object arg0, int arg1, int arg2)");
    }
}
 
public class Main {
    static JFrame m_frame;
    public static void main(String[] ARGS) {       
        m_frame = new JFrame("Teste");
        m_frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        m_frame.getContentPane().setLayout(new BorderLayout());
           
        final JTable table = new JTable();
       
        final MyTableModel myTableModel = new MyTableModel();
        table.setModel(myTableModel);
 
        final JScrollPane scrollPane = new JScrollPane(table);
           
        m_frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
 
        JButton bt = new JButton("XXX");
        bt.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent arg0) {
                myTableModel.IncrementRow();
                myTableModel.fireTableDataChanged();
            }
        });
 
        m_frame.getContentPane().add(bt, BorderLayout.NORTH);
       
        m_frame.getContentPane().add(new JTextField(), BorderLayout.SOUTH);
           
        m_frame.pack();
        m_frame.setVisible(true);
    }
}
 
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