JFrame의 JPanel 인스턴스를 CardLayout으로 동적으로 바꾸는 방법은 무엇입니까?

<code class="java">import java.awt.CardLayout;
import java.awt.JPanel;

// Create a JFrame with a CardLayout
JFrame frame = new JFrame();
frame.setLayout(new CardLayout());

// Create a few panels to be added to the JFrame
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel();

// Add the panels to the CardLayout
frame.add(panel1, "Panel 1");
frame.add(panel2, "Panel 2");

// Show the first panel
CardLayout layout = (CardLayout) frame.getLayout();
layout.show(frame.getContentPane(), "Panel 1");

// Dynamically switch the panel on user action
// ... (user action code)
layout.show(frame.getContentPane(), "Panel 2");</code>