AWT(Example For GridLayout )

// Demonstrating GridLayout.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class GridLayoutDemo extends JFrame
implements ActionListener {
private JButton b[];
private String names[] =
{ "one", "two", "three", "four", "five", "six" };
private boolean toggle = true;
private Container c;
private GridLayout grid1, grid2;

public GridLayoutDemo()
{
super( "GridLayout Demo" );

grid1 = new GridLayout( 2, 3, 5, 5 );
grid2 = new GridLayout( 3, 2 );

c = getContentPane();
c.setLayout( grid1 );

// create and add buttons
b = new JButton[ names.length ];

for (int i = 0; i < names.length; i++ ) {
b[ i ] = new JButton( names[ i ] );
b[ i ].addActionListener( this );
c.add( b[ i ] );
}

setSize( 300, 150 );
show();
}

public void actionPerformed( ActionEvent e )
{
if ( toggle )
c.setLayout( grid2 );
else
c.setLayout( grid1 );

toggle = !toggle;
c.validate();
}

public static void main( String args[] )
{
GridLayoutDemo app = new GridLayoutDemo();

app.addWindowListener(
new WindowAdapter() {

public void windowClosing( WindowEvent e )
{
System.exit( 0 );
}
}
);
}
}