FULL PRODUCT VERSION :
java version "1.6.0_03"
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Client VM (build 1.6.0_03-b05, mixed mode, sharing)

A DESCRIPTION OF THE PROBLEM :
Type ahead keys are not processed in correct order, specially when it involves the focus traversal keys. This happens when type ahead keys are to be processed in the new Window or JInternalFrame. I wonder how it is not encountered by anyone. This is very much required for dataentry applications.
It can be reproduced very easily. Please follow the steps to reproduce.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached source code example. TypeAhead.java

1. JFrame is shown with "Show Window" button inside it.
2. press space bar
3. immediately type the keys 123TAB456 very quickly.
#NOTE: TAB is "TAB" key for focus to next field.

Key events are not handled in correct order. textfield1 contains "123456" and then "TAB" key is handled.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
textfield1 should contain 123
then TAB key should be processed to give focus to textfield2
textfield2 should contain 456
ACTUAL -
textfield1 contains 123456 and then TAB key is processed and focus goes to textfield2.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

import java.awt.*;
import java.awt.event.*;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.InputMap;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.KeyStroke;



public class TypeAhead extends Frame implements ActionListener {

Frame w = null;
TextField field1;
TextField field2;

static public void main(String[] args) {
(new TypeAhead()).setVisible(true);
}

public TypeAhead() {
super("Parent Window");
Panel panel = new Panel();
add(panel);
Button button = new Button("Show Window");
button.addActionListener(this);
panel.add(button);
setSize(200,200);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}

    public void actionPerformed(ActionEvent e){
     if (w == null) {
     // Create new window and put key listener on all components
w = new Frame("New Window");
Panel panel = new Panel();
w.add(panel);
Button button = new Button("Close");
button.addActionListener(this);
field1 = new TextField(20);
panel.add(field1);
field2 = new TextField(20);
panel.add(field2);

panel.add(button);
w.pack();
w.setVisible(true);
try {
Thread.sleep(3000);
} catch (InterruptedException ie) {
}
     } else {
     w.setVisible(false);
     w = null;
     }
    }
    
    
    
    
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
May need to write EventQueue.