FlowLayoutDemo.java

package flowlayoutdemo;

import java.awt.*;
import java.awt.event.*;

class MyFrame extends Frame implements ItemListener
{
    Button b1,b2,b3;
    TextField t1,t2,t3;
    
    Panel p1;
    Panel p2;
    Panel cp;
    
    Panel mainp;
    
    Checkbox c,c2;
    
    CardLayout cl;
    public MyFrame()
            {
                super("CardLayout Demo");
                
                CheckboxGroup cg=new CheckboxGroup();
                
                c=new Checkbox("ONE",true,cg);
                c2=new Checkbox("TWO",false,cg);
            
                c.addItemListener(this);
                c2.addItemListener(this);
                
                b1=new Button("one");
                b2=new Button("two");
                b3=new Button("three");
                
                t1=new TextField(10);
                t2=new TextField(10);
                t3=new TextField(10);
                
                cp=new Panel();
                cp.add(c);
                cp.add(c2);
                
                p1=new Panel();
                p1.add(b1);
                p1.add(b2);
                p1.add(b3);
                
                p2=new Panel();
                p2.add(t1);
                p2.add(t2);
                p2.add(t3);
                
                mainp=new Panel();
                cl=new CardLayout();
                mainp.setLayout(cl);
                
                mainp.add("ONE",p1);
                mainp.add("TWO",p2);
                
                add(cp,BorderLayout.NORTH);
                add(mainp,BorderLayout.CENTER);
            }

    @Override
    public void itemStateChanged(ItemEvent e) {
        if(c.getState())
            cl.first(mainp);
        else 
            cl.last(mainp);
    }
    
}
public class FlowLayoutDemo {

    public static void main(String[] args) {
        MyFrame f=new MyFrame();
        f.setSize(500,500);
        f.setVisible(true);
    }
    
}