testcardlayout.java

该文件在eclipse环境上运行

package test.gui;

import javax.swing.*;
import java.awt.*;

public class TestCardLayout {
	public static void main(String[] args){
		JFrame frame = new JFrame();
		CardLayout cl = new CardLayout();
		frame.setLayout(cl);
		JPanel p1 = new JPanel();
		JPanel p2 = new JPanel();
		JPanel p3= new JPanel();
		p1.setBackground(Color.red);
		p2.setBackground(Color.BLUE);
		p3.setBackground(Color.yellow);
		frame.add(p1, "p1");
		frame.add(p2, "p2");
		frame.add(p3, "p3");
		frame.setSize(400, 400);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(
				JFrame.EXIT_ON_CLOSE);
		for(int i=0; i<7; i++){
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			cl.next(frame.getContentPane());
		}
		cl.show(frame.getContentPane(), "p2");
	}
}