SWING(Focus)

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

public class FocusTest extends JFrame implements KeyListener
{
JTextField jtf1,jtf2,jtf3;
JPanel p;

public FocusTest()
{
jtf1 = new JTextField(10);
jtf2 = new JTextField(10);
jtf3 = new JTextField(10);

jtf1.addKeyListener(this);

p = new JPanel();
p.add(jtf1);
p.add(jtf2);
p.add(jtf3);

getContentPane().add(p);
}
public static void main(String dd[])
{
FocusTest ft = new FocusTest();
ft.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ft.setSize(200,200);
ft.setVisible(true);
}
public void keyPressed(KeyEvent ke)
{
if(ke.getKeyCode() == KeyEvent.VK_ENTER)
{
System.out.println("ll");
jtf3.requestFocus();
}
}
public void keyReleased(KeyEvent ke)
{}
public void keyTyped(KeyEvent ke)
{}
}