binding a db to a JTable

I want to update the underlying TableModel as per:

http://java.sun.com/docs/books/tutorial/uiswing/components/
table.html#modelchange

and then have that change percolate down to the db. Or, should that
happen in reverse? Change the db, then the TableModel, then update the
view?

thufir@arrakis:~/bcit3621$
thufir@arrakis:~/bcit3621$ head -n 137 crud/src/a00720398/view/View.java
| tail -n 14

    public void tableChanged(TableModelEvent evt) {
        int row = evt.getFirstRow();
        int column = evt.getColumn();
        TableModel model = (TableModel) evt.getSource();
        String columnName = model.getColumnName(column);
        Object data = model.getValueAt(row, column);
        /*now that the user has changed the text
         * of a field for a record, how to get
         * that change reflected in the db. SQL?
         * Then, the db calls notify() to let the
         * TableModel know that it should update?
         */
    }
thufir@arrakis:~/bcit3621$
thufir@arrakis:~/bcit3621$ cat crud/src/a00720398/model/CarModel.java
package a00720398.model;

import a00720398.model.*;
import a00720398.view.*;
import java.sql.*;
import java.util.*;
import java.util.logging.*;
import javax.swing.*;
import javax.swing.table.*;

@SuppressWarnings({"serial", "unchecked"})
public class CarModel extends DefaultTableModel implements Observer {

    private static final TableModel INSTANCE = new CarModel();

    private CarModel() {
        this.dataVector = Model.getInstance().getDataVector();
        this.columnIdentifiers = Model.getInstance().getColumnIdentifiers
();
    }

    public static TableModel getInstance() {
        return INSTANCE;
    }

    public void update(Observable arg0, Object arg1) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}

thufir@arrakis:~/bcit3621$

thanks,

Thufir