Pop up menu

Question

I have a class that extends JPasswordField.
no i need a thing like a pop up menu like in the windows when you have caps lock on i come up to tell you this way my users know that caps is active. i have done all of the back door stuff and at the moment it just prints out using System.out.println that caps is active. not the pop up so only last a short time but should not pause the program and should be independet of app just the password field i need the help to create the little pop up menu and to after let say 500ms close it.
Please can you help me.
it you would like to see the code i wil post it later.
but if you under stand what i am needed then please can you help point me in the right direction. I think i would use a JWindow but then it would not move if the log in screen was moved so there has to be a better way of doing it.
Thanks
David

Answer 1

thanks dose JWindow support if i put a .gif that has transparent part in it would it just leave the space blank so if i made an imageIcon added that to a JLabel and then to the JWindow add put that on top of the JFrame or what ever i have made as the parent . but then what happend if i move the JFrame. will the JWindow move with it.....
here is the code that i have done that works but the pop up thing is buging me as i dont know how i am going to do it.
package utils;
import java.awt.event.*;
import javax.swing.JPasswordField;
import javax.swing.text.Document;
import java.awt.Toolkit;
* This class is just an extension of <Code>JPasswordField</Code> so that
* it can tell the user that the caps lock is on when they enter the field
* it also tells them if the caps is pressed while they are in the field.
* and also if it was pushed in another application and then they go back to
* the field.
* @author David Rubin
* @version 1.0
public class CapsLockPasswordField extends JPasswordField
   boolean needsToBeChecked=true;
   public CapsLockPasswordField()
      super();
      addListnenster();
   public CapsLockPasswordField(String text)
      super(text);
      addListnenster();
   public CapsLockPasswordField(String text,int cols)
      super(text,cols);
      addListnenster();
   public CapsLockPasswordField(Document doc,String text,int cols)
      super(doc,text,cols);
      addListnenster();
   private void addListnenster()
      this.addFocusListener(new FocusAdapter(){
          public void focusGained(FocusEvent e){
             checkForCapsLock();
          needsToBeChecked=false;
          public void focusLost(FocusEvent e){
             checkForCapsLock();
            needsToBeChecked=true;
      this.addKeyListener(new KeyAdapter(){
         public void keyPressed(KeyEvent e){
            if(e.getKeyCode()==KeyEvent.VK_CAPS_LOCK)
                needsToBeChecked=true;
            checkForCapsLock()  ;
            needsToBeChecked=false;
   private void checkForCapsLock()
      //this save us the trouble of checking if there is a caps on.
      if(!needsToBeChecked)
         return;
      boolean b= Toolkit.getDefaultToolkit().getLockingKeyState(
            KeyEvent.VK_CAPS_LOCK);
      if(b)
         //IN HERE YOU CAN DO ANY THING TO TELL THE USER THAT CAPS
        //LOCK IS ON
      //IS IT OK IF I GIVE THIS TO YOU
//------------------------------->>>>>>>>>>>>>>>>>>
         System.out.println("Caps lock is on");
}//----------------->>>>>>>>>>
this is were is want to put a pop up so that it can be there to show use wha is going on.
David