JFileChooser - filename going away on switching directory

Question

When the JFileChooser opens up, a selected file name can be shown in the file name edit box. However, as soon as the user switches directories, it is cleared. Is there any way to make the filename stay after switching directories?
A perfect example would be in a "Save" dialog box. The default file name for the file to save is shown, but as soon as the user switches directories, the file name is cleared.
Is there a way to listen for a directory change within the JFileChooser (ie a fire event method? or action listener?) and re-set the filename? Is this a flaw in JFileChooser design? Am I just missing something obvious?
I've seen this in multiple Java applications and it is very inconvenient for the user.

Answer 1

This is the only way I could think of doing it. However, if you manually change the filename, then click on a new directory, it will change the filename back to the default one. This is the best option I could think of right now.
    final String defaultFileName = "test.txt";
    final JFileChooser dlg = new JFileChooser(".");
    dlg.setSelectedFile(new File(defaultFileName));
    dlg.setFileSelectionMode(JFileChooser.FILES_ONLY); // doesn't work...the following is a work-around
    dlg.addPropertyChangeListener(new PropertyChangeListener()
        public void propertyChange(PropertyChangeEvent pce)
          if(pce.getPropertyName().equals(JFileChooser.DIRECTORY_CHANGED_PROPERTY))
            dlg.setSelectedFile(new File(pce.getNewValue() + File.separator + defaultFileName));
  int result = dlg.showSaveDialog(...);
  if(result == JFileChooser.APPROVE_OPTION)
    // create and save the file in dlg.getSelectedFile()
  }