Why are the contents of this table not being shown?

The code below was entirely generated by a visual GUI builder (*).
This is the way it looks like, in design mode:

     http://patriot.net/~ramon/misc/InvisibleTable.png

My problem is that the cell contents are not being displayed at run
time for some reason.

What I am trying to do is port this NetBeans-specific module to
standard code and jar:

  http://platform.netbeans.org/tutorials/nbm-open-office.html

TIA!,

-Ramon

(*) from Instantiations at http://www.windowbuilderpro.com/

-------------------

package swingexample;

import java.awt.ComponentOrientation;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.table.AbstractTableModel;

public class SwingExample extends JFrame {

    private JTextField textField;
    private JTable table;

    class TableTableModel extends AbstractTableModel {
        public final String[] COLUMN_NAMES = new String[] {"JavaLobby
Title", "Date", "Author", "Reply"};
        public int getRowCount() {
            return 0;
        }
        public int getColumnCount() {
            return COLUMN_NAMES.length;
        }
        public String getColumnName(int columnIndex) {
            return COLUMN_NAMES[columnIndex];
        }
        public Object getValueAt(int rowIndex, int columnIndex) {
            return null;
        }
    }

    public static void main(String args[]) {
        try {
            SwingExample frame = new SwingExample();
            frame.setVisible(true);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public SwingExample() {
        super();
        getContentPane().setLayout(null);
        setTitle("Swing Example");
        setBounds(100, 100, 623, 581);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        final JScrollPane scrollPane = new JScrollPane();
        scrollPane.setBounds(30, 23, 554, 215);
        getContentPane().add(scrollPane);

        table = new JTable();
        table.setCellEditor(null);
        table.setShowGrid(true);
        table.setCellSelectionEnabled(true);
        table.setModel(new TableTableModel());
// table.setValueAt("Hello world?", 2, 3) <-- line added by me.
        scrollPane.setViewportView(table);

        final JPanel panel = new JPanel();
        panel.setBorder(new EtchedBorder(EtchedBorder.LOWERED));
        panel.setName("name here");
        panel.setLayout(null);
        panel.setBounds(26, 345, 563, 74);
        getContentPane().add(panel);

        final JLabel executableLabel = new JLabel();

executableLabel.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
        executableLabel.setText("Executable:");
        executableLabel.setBounds(32, 30, 77, 14);
        panel.add(executableLabel);

        textField = new JTextField();
        textField.setBounds(111, 27, 329, 20);
        panel.add(textField);

        final JButton browseButton = new JButton();
        browseButton.setText("Browse...");
        browseButton.setBounds(458, 26, 95, 23);
        panel.add(browseButton);

        final JRadioButton mostRepliedRadioButton = new JRadioButton();
        mostRepliedRadioButton.setSelected(true);
        mostRepliedRadioButton.setText("Most Replied");
        mostRepliedRadioButton.setBounds(169, 452, 113, 23);
        getContentPane().add(mostRepliedRadioButton);

        final JRadioButton leastRepliedRadioButton = new JRadioButton();
        leastRepliedRadioButton.setText("Least Replied");
        leastRepliedRadioButton.setBounds(344, 452, 113, 23);
        getContentPane().add(leastRepliedRadioButton);

        final JButton generateReportButton = new JButton();
        generateReportButton.setText("Generate Report");
        generateReportButton.setBounds(236, 494, 142, 30);
        getContentPane().add(generateReportButton);
    }

}