Problema del menú emergente de JWindow

importar javax.swing.JComponent;

importar javax.swing.JLabel

importar javax.swing.JPopupMenu; p>importar javax.swing.JWindow;

clase pública JWin {

public static void main( String[] args) {

JWindow w = nueva JWindow ();

w.setAlwaysOnTop(true);

w.setLayout(new FlowLayout(FlowLayout.LEFT));

final JPopupMenu pm = nuevo JPopupMenu ();

pm.add(" a ");

pm.add(" b ");

pm.add(" c ") ;

JButton b = new JButton("salir");

w.add(b);

JLabel l = new JLabel("
ventana emergente

");

l.setOpaque(true);

l.setBackground(Color.red);

w.add(l);

// w.getContentPane().addMouseListener(new MouseListener(){

// public void public void mouseClicked(MouseEvent e) {}

// public void mouseEntered(MouseEvent e) {}

// public void mouseExited(MouseEvent e) {}

// public void mousePressed (MouseEvent e) {if(e.MouseEvent e) {}

// public void mouseEntered(MouseEvent e) {}

// public void mouseExited(MouseEvent e) {}

//isPopupTrigger())pop(e);}

// public void mouseReleased(MouseEvent e) {if(e. isPopupTrigger())pop(e);}

// void pop(MouseEvent e){

// pm.show((JComponent)e.getSource(),e.getX(),e.getY()) ;

// }

// });

l.addMouseListener(new MouseListener(){

public void mouseClicked( MouseEvent e) {}

public void mouseEntered( MouseEvent e) {}

public void mous

eExited(MouseEvent e) {}

public void mousePressed(MouseEvent e) {if(e.isPopupTrigger())pop(e);}