Trying to update a JTable w/ new info

Question

I've had some issue understanding the change events in the tutorial found here. http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#simple I've mostly gotten it, with the exception that my data does not change. I'm fairly certain it has to do with the tableChanged method. As always any help is GREATLY appreciated thanks.
This is a simple JFrame containing a Table with a JButton that changes the value of my data variable.
The tableChanged method is basically straight copied, what do I need to do for the entire table to update?
package testtable;
import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.JScrollPane;
import java.awt.Dimension;
import java.awt.BorderLayout;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
import javax.swing.event.TableModelListener;
import javax.swing.event.TableModelEvent;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
* @author rico
public class TestTable implements TableModelListener {
    //this method is verbatim out of the tutorial
    public void tableChanged(TableModelEvent e) {
        int row = e.getFirstRow();
        int column = e.getColumn();
        TableModel model1 = (TableModel)e.getSource();
        String columnName = model.getColumnName(column);
        Object data3 = model.getValueAt(row, column);
        // Do something with the data...
        static String[] columnNames = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"};
        static Object[][] data = {
            {"Mary", "Campione",
             "Snowboarding", new Integer(5), new Boolean(false)},
            {"Alison", "Huml",
             "Rowing", new Integer(3), new Boolean(true)},
            {"Kathy", "Walrath",
             "Knitting", new Integer(2), new Boolean(false)},
            {"Sharon", "Zakhour",
             "Speed reading", new Integer(20), new Boolean(true)},
            {"Philip", "Milne",
             "Pool", new Integer(10), new Boolean(false)}
        static Object[][] data2 = {
            {"Cunt", "Campione",
             "Snowboarding", new Integer(5), new Boolean(false)},
            {"Alison", "Huml",
             "Rowing", new Integer(3), new Boolean(true)},
            {"Kathy", "Walrath",
             "muff-diving", new Integer(2), new Boolean(false)},
            {"Sharon", "Zakhour",
             "Motor_boating", new Integer(20), new Boolean(true)},
            {"Philip", "Milne",
             "Pool", new Integer(10), new Boolean(false)}
        static AbstractTableModel model = new AbstractTableModel() {
            public Object getValueAt(int row, int col) {
                return data[row][col];
            public int getColumnCount() {
                return columnNames.length;
            public int getRowCount() {
                return data.length;
            @Override
            public void setValueAt(Object value, int row, int col) {
                data[row][col] = value;
                fireTableDataChanged();
     * @param args the command line arguments
    public static void main(String[] args) {
        JFrame frame = new JFrame("TestTable");
        frame.setSize(500, 500);
        JButton button = new JButton("button");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                data = data2;
        JTable table = new JTable(model);
        table.getModel().addTableModelListener(table);
        JScrollPane pane = new JScrollPane(table);
        pane.setPreferredSize(new Dimension(400, 200));
        frame.add(pane, BorderLayout.NORTH);
        frame.add(button, BorderLayout.SOUTH);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
}Edited by: rico16135 on Aug 30, 2008 4:13 AM

Answer 1

There is no need to extend AbstractTableModel in this example.
You can just create a DefaultTableModel using data and columnNames.
If you want to display data2 inside the table create a new DefaultTableModel with data2 and use table.setModel to update the table.