动态添加JTable

Question

I have here the code when a button is clicked. It is supposed to add a JTable in the JPanel regularPanel . The problem is that it doesn't show in the panel.

I added the panel in the frame via clicking the panel component.

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

    Object[][] data = {
        {"Kathy", "Smith",
         "Snowboarding", new Integer(5), new Boolean(false)},
        {"John", "Doe",
         "Rowing", new Integer(3), new Boolean(true)},
        {"Sue", "Black",
         "Knitting", new Integer(2), new Boolean(false)},
        {"Jane", "White",
         "Speed reading", new Integer(20), new Boolean(true)},
        {"Joe", "Brown",
         "Pool", new Integer(10), new Boolean(false)}
    };
    JTable table = new JTable(data,columnNames);
    table.setBounds(100, 100, 100, 80);
    JScrollPane tableContainer = new JScrollPane(table);
    regularPanel.add(tableContainer);

What should I do to view that table in the panel?

Answer 1

Add your table to the JScrollPane viewport.

Try the following:

TableModel tableDataModel = new AbstractTableModel() {
    public int getColumnCount() { return 2; }
    public int getRowCount() { return 5; }
    public Object getValueAt(int row, int col) { return new Integer(row*col); }
JTable table = new JTable(tableDataModel);
JScrollPane scrollPane = new JScrollPane();
scrollPane.getViewport().add(table);

In your button event handler, you should also be sure to call revalidate() and potentially repaint() once the table container is added to your panel.