Listener adéquat pour un jtext field

import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.util.Map;
import java.util.TreeMap;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class Test
{
public static void main(String...args)
{
    final Map<String,String> authorized = new TreeMap<String,String>();
        authorized.put("Riri","123");
        authorized.put("Fifi","456");
        authorized.put("Loulou","789");
                
    final JTextField login = new JTextField();

    final JTextField control1 = new JTextField();
    control1.setEnabled(false);
    
    login.addFocusListener(new FocusListener()
    {
        @Override
        public void focusGained(FocusEvent e) 
        {
        }

        @Override
        public void focusLost(FocusEvent e)
        {            
            if (authorized.containsKey(login.getText()))
            {
                control1.setBackground(Color.GREEN);
                control1.setText("Autorisé");
            }
            else
            {
                control1.setBackground(Color.RED);
                control1.setText("Interdit");
            }
        }
    });
        
    final JPasswordField password = new JPasswordField();
    
    final JTextField control2 = new JTextField();
    control2.setEnabled(false);
    
    password.addFocusListener(new FocusListener()
    {
        @Override
        public void focusGained(FocusEvent e) 
        {
        }

        @Override
        public void focusLost(FocusEvent e)
        {
            if (authorized.containsKey(login.getText()))
            {
                if (authorized.get(login.getText()).equals(new String(password.getPassword())))
                {
                    control2.setBackground(Color.GREEN);
                    control2.setText("Correct");
                }
                else
                {
                    control2.setBackground(Color.RED);
                    control2.setText("Incorrect");                    
                }
            }
            else
            {
                control2.setBackground(Color.WHITE);
            }
        }
    });
        
    final JFrame frame = new JFrame();
    frame.setLayout(new GridLayout(2,3));
    frame.add(new JLabel("Login : "));
    frame.add(login);
    frame.add(control1);
    frame.add(new JLabel("Mot de passe : "));
    frame.add(password);
    frame.add(control2);
    frame.pack();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);    
}
}