更新面板

Question

我在我的框架上有一個面板。通過點擊一個按鈕，我想刪除舊面板並製作其他面板並將該面板添加到我的框架中（我也使用netbeans） 幫我，我怎麼能做到這一點感謝

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

這樣：

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();