Focus lost first ?

Question

i have 2 text fields, A and B. when i hit tab, focus travel from A to B, my question is which focus event occur first ? focus lost for A or focus gained for B ?

Answer 1

i have a more complex problem, why i press the tab, the program won't fire the ket event? when i press enter, it fire the key event ? a sample code is provided and anyone can explain the result ?
Ai got the focus
key event fired
Bi got the focus
Ai lost the focus
Ai lost the focus
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class test10 implements FocusListener, ActionListener, KeyListener
  private static JFrame frame;
  private static JPanel pane1;
  private static JTextField tfield1, tfield2;
  private static JTextField current = null;
  public test10()
    frame = new JFrame( "A frame" );
    frame.setSize( 100, 50 );
    pane1 = new JPanel();  
    tfield1 = new JTextField( "A", 5 );
    tfield1.setName( "A" );
    tfield1.addFocusListener( this );
    tfield1.addActionListener( this );
    tfield1.addKeyListener( this );
    tfield2 = new JTextField( "B", 5 );
    tfield2.setName( "B" );
    tfield2.setEnabled( false );
    tfield2.addFocusListener( this );
    tfield2.addActionListener( this );
    tfield2.addKeyListener( this );
    pane1.add( tfield1 );
    pane1.add( tfield2 );    
    frame.getContentPane().add( pane1 );
    frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
    frame.pack();
    frame.setVisible( true );
  public void keyPressed(KeyEvent e)
System.out.println( "key event fired" );
    if(e.getKeyCode() == e.VK_TAB)
      if( current == tfield1 )
        tfield1.setEnabled( false );
        tfield2.setEnabled( true );
        tfield2.requestFocus();
      if( current == tfield2 )
        tfield2.setEnabled( false );
        tfield1.setEnabled( true );
        tfield1.requestFocus();
  public void keyTyped( KeyEvent e )
  public void keyReleased(KeyEvent e)   
  public void focusGained( FocusEvent fe )
    System.out.println( ((JTextField)fe.getSource()).getName() + "i got the focus" );
    current = (JTextField)fe.getSource(); 
  public void focusLost( FocusEvent fe )
    if( fe.getSource() == tfield1 )
      tfield2.setEnabled( true );
      tfield2.requestFocus();     
      tfield1.setEnabled( false );
      System.out.println( ((JTextField)fe.getSource()).getName() + "i lost the focus" );   
    if( fe.getSource() == tfield2 )
      tfield1.setEnabled( true );
      tfield1.requestFocus();  
      tfield2.setEnabled( false );  
      System.out.println( ((JTextField)fe.getSource()).getName() + "i lost the focus" );   
  public void actionPerformed( ActionEvent ae )
    if( ae.getSource() == tfield1 )
      tfield1.setEnabled( false );
      tfield2.setEnabled( true );
      tfield2.requestFocus();     
      System.out.println( ((JTextField)ae.getSource()).getName() + "i lost the focus" );   
    if( ae.getSource() == tfield2 )
      tfield2.setEnabled( false );          
      tfield1.setEnabled( true );
      tfield1.requestFocus();
      System.out.println( ((JTextField)ae.getSource()).getName() + "i lost the focus" );   
  public static void main( String[] args )
    test10 t = new test10();
}