JTable，通过MousClick在具体单元格中动态添加lable

Question

/**
 * Initialize the contents of the frame.
 */
private void initialize() {
    frame = new JFrame();
    frame.setBounds(100, 100, 364, 385);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(null);

    table = new JTable();
    table.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent event) {
            Point point = event.getPoint();
            JTable target = (JTable)event.getSource();
            int column = table.columnAtPoint(point); 
            int row = target.getSelectedRow();
           table.getColumnModel().getColumn(column).setCellRenderer(new ImageRenderer());
            //JOptionPane.showMessageDialog(table, "Column header #" + column + " is clicked");
        }
    });
    table.setBorder(new SoftBevelBorder(BevelBorder.LOWERED, Color.DARK_GRAY, Color.LIGHT_GRAY, SystemColor.menu, null));
    table.setModel(new DefaultTableModel(
        new Object[][] {
            {null, "", null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
            {null, null, null, null, null, null},
        },
        new String[] {
            "New column", "New column", "New column", "New column", "New column", "New column"
        }
    ));
    table.getColumnModel().getColumn(0).setMinWidth(50);
    table.setBounds(0, 0, 350, 350);
    table.setRowHeight(50);
    frame.getContentPane().add(table);
}

class ImageRenderer extends DefaultTableCellRenderer {
  JLabel lbl = new JLabel();
  ImageIcon imageIcon = new ImageIcon(new ImageIcon("green-glossy-ball.jpg").getImage().getScaledInstance(50, 50, Image.SCALE_DEFAULT));

  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
      boolean hasFocus, int row, int column) {
    lbl.setIcon(imageIcon);
    return lbl;
  }

}

Answer 1

不需要自定义呈现。

你需要做的是：

1. 向表模型
添加 图标
2. 重写TableModel的GetColumnClass(...)方法以返回Class.Icon，表将使用默认的图标呈现器。

table.setBounds(0, 0, 350, 350);
table.setRowHeight(50);
frame.getContentPane().add(table);