Box Layout Demo in Java

import java.awt.*;                         //pn=526 core java//
import javax.swing.*;
class BoxLayoutDemo extends JFrame
{
BoxLayoutDemo()
{
Container c=getContentPane();
c.setLayout(new FlowLayout());
MyPanel1 mp1=new MyPanel1();
c.add(mp1);
MyPanel2 mp2=new MyPanel2();
c.add(mp2);
}
public static void main(String arg[])
{
BoxLayoutDemo demo =new BoxLayoutDemo();
demo.setSize(400,400);
demo.setTitle("Box layout");
demo.setVisible(true);
demo.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
class MyPanel1 extends JPanel
{
MyPanel1()
{
BoxLayout box1=new BoxLayout(this,BoxLayout.X_AXIS);
setLayout(box1);
JButton b1,b2,b3;
b1=new JButton("Button1");
b2=new JButton("Button2");
b3=new JButton("Button3");
add(b1);
add(b2);
add(b3);
}
}
class MyPanel2 extends JPanel
{
MyPanel2()
{
BoxLayout box2=new BoxLayout(this,BoxLayout.Y_AXIS);
setLayout(box2);
JButton b1,b2,b3;
b1=new JButton("Button1");
b2=new JButton("Button2");
b3=new JButton("Button3");
add(b1);
add(b2);
add(b3);
}
}