cardlayoutdemo.java

java课程的资料以及实验的代码

import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
//卡片布局实例

 class CardLayoutDemo extends JFrame
{

	/**
	 * @param args
	 */
	JButton btn1;
	JLabel lbl1;
	JButton btn2;
	JButton btn3;
	JButton btn4;
	CardLayout clt;
	JPanel main;
	
	public CardLayoutDemo()
	{
		btn1=new JButton("First Button");
		btn2=new JButton("Second Button");//实例化四个按钮
		btn3=new JButton("Third Button");
		btn4=new JButton("Forth Button");
		lbl1=new JLabel("Hello Java");
		 main=new JPanel();//设置主面板
		
		 clt=new CardLayout();//实例化卡片布局
		main.setLayout(clt);//将主面板设为卡片布局
		
		
		JPanel p1=new JPanel();//设置第一个面板
		p1.setBackground(Color.RED);//背景色为红色
		p1.add(lbl1);//添加按钮和标签
		p1.add(btn1);
		
		JPanel p2=new JPanel();
		p2.setBackground(Color.BLUE);
		btn2.setBackground(Color.CYAN);
		p2.add(btn2);
		
		JPanel p3=new JPanel();
		p3.setBackground(Color.GREEN);
		p3.add(btn3);
		
		JPanel p4=new JPanel();
		p4.setBackground(Color.MAGENTA);
		p4.add(btn4);
		//给主面板添加鼠标监听器，鼠标单击时，转换不同的面板
		main.addMouseListener(new MouseAdapter(){
			public void mouseClicked(MouseEvent  me)
			{
				clt.next(main);
			}
			
		});
		
		main.add("first",p1);
		main.add("second",p2);//将四个面板添加到主面板
		main.add("Third",p4);
		main.add("Forth",p4);
		
		this.add(main,BorderLayout.CENTER);//将主面板添加到窗体
		this.setSize(300,300);
		this.setVisible(true);
		
		
		
	}

	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
      new CardLayoutDemo();
	}

}