CardLayout 사용 간단 예제

package gui;

import java.awt.EventQueue;
import java.awt.Toolkit;

import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.GridLayout;
import java.awt.CardLayout;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class GuiMain {

	private JFrame frame;
	private CardLayout cardLayout = new CardLayout();
	private JPanel box_panel, panel_1, panel_2;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					GuiMain window = new GuiMain();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public GuiMain() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		
		// 창 크기 설정
		int use_width = 600;
		int use_heigt = 400;
		// 창 보기 좋게 띄우기 (위치계산) > 정확히 중앙에 띄우기
		int get_width = Toolkit.getDefaultToolkit().getScreenSize().width / 2;
		int get_heigt = Toolkit.getDefaultToolkit().getScreenSize().height / 2;
		// 중앙에 뜨게 위치 계산
		int width = get_width - use_width / 2;
		int heigt = get_heigt - use_heigt / 2;
		// 창 위치 설정
		frame = new JFrame();
		frame.setBounds(width, heigt, use_width, use_heigt);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(new GridLayout(1, 0, 0, 0));
		
		box_panel = new JPanel();
		frame.getContentPane().add(box_panel);
		box_panel.setLayout(cardLayout);   // 여기 객체를 받아오는걸로 수정
		
		panel_1 = new JPanel();
		box_panel.add(panel_1, "panel_1");  // 패널에 고유 카드 이름 설정
		panel_1.setLayout(null);
		
		JButton bt_1_next = new JButton("New button");
		bt_1_next.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				cardLayout.show(box_panel, "panel_2"); // 이동할 패널 설정
			}
		});
		bt_1_next.setBounds(441, 312, 97, 23);
		panel_1.add(bt_1_next);
		
		panel_2 = new JPanel();
		box_panel.add(panel_2, "panel_2");
		panel_2.setLayout(null);
		
		JButton bt_2_next = new JButton("New button");
		bt_2_next.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				cardLayout.show(box_panel, "panel_1");
			}
		});
		bt_2_next.setBounds(444, 312, 97, 23);
		panel_2.add(bt_2_next);


	}
}