更新面板

Question

我的框架上有一个面板。通过单击一个按钮，我想删除旧面板并创建另一个面板并将该面板添加到我的框架中。（我也使用 netbeans） 你能帮我一下我该怎么做吗？谢谢

Answer 1

JFrame frame = new JFrame();
final JPanel origPanel = new JPanel();
frame.add(origPanel, BorderLayout.CENTER);

MouseListener ml = new MouseAdapter() {
  public void mouseClicked(MouseEvent evt) {
    // Mouse clicked on panel so remove existing panel and add a new one.
    frame.remove(origPanel);
    frame.add(createNewPanel(), BorderLayout.CENTER);

    // Revalidate frame to cause it to layout the new panel correctly.
    frame.revalidate();

    // Stop listening to origPanel (prevent dangling reference).
    origPanel.removeMouseListener(this);
  }
}

origPanel.addMouseListener(ml);

Answer 2

这边走：

    final JFrame frame = new JFrame();
    frame.setSize(200, 200);

    final JPanel panelA = new JPanel();
    final JPanel panelB = new JPanel();
    JButton button = new JButton("Switch");
    button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            frame.remove(panelA);
            frame.add(panelB);
            frame.show();
        }
    });
    JLabel label = new JLabel("This is panel B. Panel A is gone!");
    panelB.add(label);
    panelA.add(button);
    frame.add(panelB);
    frame.add(panelA);
    frame.show();