i cant set the string name of my table columns

[jhon max]

please I need some help how to make the column names appear on my table....
thanks!

  public class InventoryMainDatabase extends JFrame {

    private JPanel inventoryPanel;

    private JTable inventoryTable;
   
    
    private ImageIcon background;

    public InventoryMainDatabase() {

        inventoryPanel = new JPanel();
        background = new ImageIcon("c:/pics/popupbck4.jpg");
    }
    
    public void setComponents(Container cont) {

        inventoryPanel.setLayout(new GridLayout(1, 0));

        String[] columnNames = {"First Name",
                                "Last Name",
                                "Sport",
                                "# of Years",
                                "Vegetarian"};

        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)}
        };
        inventoryTable = new JTable(data, columnNames)  {

            public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {

                Component c = super.prepareRenderer( renderer, row, column);

                // We want renderer component to be
                //transparent so background image is visible
                if( c instanceof JComponent ) {

                    ((JComponent)c).setOpaque(false);
                }

                return c;
            }

            public void paint( Graphics g ) {

                // tile the background image
                Dimension d = getSize();


                for( int x = 0; x < d.width; x += background.getIconWidth()) {

                    for( int y = 0; y < d.height; y += background.getIconHeight()) {

                        g.drawImage( background.getImage(), x, y, null, null );
                    }

                    // Now let the paint do its usual work
                    super.paint(g);
                }
            }
        };
        inventoryTable.setGridColor(Color.BLACK);
        inventoryTable.setOpaque(false);
        inventoryTable.setPreferredScrollableViewportSize(new Dimension(500, 70));
        inventoryTable.setFillsViewportHeight(true);

        inventoryPanel.add(inventoryTable);
        cont.add(inventoryPanel);
    }
   

    public void createTable() {

        this.setComponents(this.getContentPane());
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(1000, 400);
        this.setResizable(false);
        this.setLocationRelativeTo(null);
        this.setVisible(true);
    }

    public static void main(String[] args) {

        SwingUtilities.invokeLater(new Runnable() {

            InventoryMainDatabase iD = new InventoryMainDatabase();

            public void run() {

                iD.createTable();
            }
        });
    }
}
  

[Michael Dunn]

//inventoryPanel.add(inventoryTable);
inventoryPanel.add(new JScrollPane(inventoryTable));

[Campbell Ritchie]

Moving to our GUIs forum.