HELP on JTABLE and table model

[joseph dela cruz]

i need help on clearing tables guys
i want to clear the tables then get all the elements from JDBC again just like what it does on form load the problem is when i clear it which i did. but whenever i call the upTable it loads 6 columns instead of just three

this method is triggered by a button

        
        while(tblRecords.getColumnModel().getColumnCount() > 0)
        {
        tblRecords.removeColumn(tblRecords.getColumnModel().getColumn(0));
        }
        while(mtblRecord.getRowCount() > 0)
        {
        mtblRecord.removeRow(0);
        }
        upTable();       


 private void upTable()
    {
    try
    {   
        for(int x = 0 ; x < rm.getColumnCount()-1; x++)
        {
        mtblRecord.addColumn(rm.getColumnName(x+1).replaceAll("EX_", " ").trim());
        }
        rs.beforeFirst();
        while(rs.next())    
        {
        usErs usO = new usErs(rs.getString("EX_ID"),rs.getString("EX_USER"),rs.getString("EX_POSITION"));
        mtblRecord.addRow(new Object[] {usO.id(),usO.User(),usO.Position()});
        }
    }
    catch(SQLException err)
    {
    JOptionPane.showMessageDialog(frmLog.this, err.getMessage());
    }
    }

also please comment on the way i put rows is it proper to use a constructor object or a different way is way much better?

[Rob Spoor]

Removing a column from your JTable does not remove the column from your TableModel, only from the visual representation.
Assuming you're using a DefaultTableModel, you can clear that with just two lines:

mtblRecord.setRowCount(0); // no more rows
mtblRecord.setColumnCount(0); // no more columns

joseph dela cruz wrote:also please comment on the way i put rows is it proper to use a constructor object or a different way is way much better?

Since you create the object, get its values, then discard it, I would skip it completely:

Object[] row = {rs.getString("EX_ID"),rs.getString("EX_USER"),rs.getString("EX_POSITION")};
mtblRecord.addRow(row);