FULL PRODUCT VERSION :
java version "1.6.0_04"
Java(TM) SE Runtime Environment (build 1.6.0_04-b12)
Java HotSpot(TM) Client VM (build 10.0-b19, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
FilterKeys is a Windows accessibility feature that allows you to hold down each key for an extended period of time before the key is registered. The problem is when you try to set a label for a component, via JLabel.setLabelFor, the filter-key sequence of, e.g., holding down "Alt", then holding down "m", does not end up transferring focus to the component.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
In Windows, enable sticky keys by going to Start > Settings > Control Panel > Accessibility Options. Don't select "Use FilterKeys" yet as it'll make the rest difficult. Instead, click FilterKeys "Settings", then make sure that "Use shortcut" is checked.

Now run the attached program. Manually put focus on "Another Button". Confirm that Alt-M transfers focus to the button labeled "A Button". Put focus back to "Another Button".

Now Hold down "Shift" for 8 seconds to activate FilterKeys. Now you have to hold down Alt for a moment before it registers, then you should hold down M for a moment as well.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The button labeled "A Button" should get focus.

The easiest way is to compare the behavior to a native app.
ACTUAL -
The "A Button" button doesn't get focus; something else does (not sure what).

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class JawsMenuTest {
    public static void main(String[] args) throws Exception {
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        JMenuItem m1 = new JMenuItem("Reads Well");
        m1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A, KeyEvent.CTRL_MASK));

        JMenuItem m2 = new JMenuItem("Does Not Read");
        m2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F1, KeyEvent.SHIFT_MASK));

        JMenu m = new JMenu("Test");
        m.setMnemonic('t');
        m.add(m1);
        m.add(m2);

        JMenuBar mb = new JMenuBar();
        mb.add(m);

        JFrame f = new JFrame();
        f.setJMenuBar(mb);

        JLabel l = new JLabel("Test me:");
        JButton b = new JButton("A Button");
        l.setDisplayedMnemonic('m');
        l.setLabelFor(b);
        f.add(l, BorderLayout.WEST);
        f.add(b, BorderLayout.CENTER);
        f.add(new JButton("Another Button"), BorderLayout.EAST);

        f.setSize(300, 200);
        f.show();
    }
}

---------- END SOURCE ----------