Having troble focusing when updating swing form type application

Question

I'm writing a piece of code where it is necessary to allow the end-user to unmask a password. I want the focus to return to the text field/password field however because it is necessary to call repaint() using the ActionListner calling requestFocusInWindow has very little effect. This is because repaint que's and is run by run by the thread that was running the ActionListner, (I hope I'm making sense). I don't do GUI often for obvious reasons. Please look at the Box bellow and tell me if you have a solution.
import javax.swing.*;
import javax.swing.text.Document;
import javax.swing.text.PlainDocument;
class Blah extends Box {
  protected final Document doc=new PlainDocument();
  JTextField jtf=new JTextField(doc,null,10);
  JPasswordField jpf=new JPasswordField(doc,null,10);
  JCheckBox jcb = new JCeckBox("switch");
  Blah(){
    super(BoxLayout.X_AXIS);
    jcb.addActionListner(new LayoutAction(this));
    this.invalidate(); //Makesure that doLayout is called (not verbosely necessary)
  @Overrides
  public void doLayout(){
    this.removeAll();
    /*This is the main function of the code */
    if(jcb.isSelected())this.add(jtf);
    else this.add(jpf);
    this.add(jcb);
    super.doLayout();
} class LayoutAction implements ActionListner {
  JComponent owner;
  LayoutAction(JComponent owner){
    this.owner=owner;
  public void actionPerformed(ActionEvent e){
    this.owner.revalidate();
    this.owner.repaint();
}

Answer 1

Hey thanks... That helped out with another situation similar to this I was having trouble with... Turns out it's the revalidate() that makes requestFocus() usless thus I changed the code to have teh request focus in the overriden doLayout().... I'm sure this doesn't matter to you much more than you were being helpful.
So thanks!!! :)