String savedDir = null;
...
JFileChooser fc;
if (currentDir == null)
  fc = new JFileChooser();
else
  fc = new JFileChooser(currentDir);
...
int res = fc.showOpenDialog(this);
if (res == JFileChooser.APPROVE_OPTION) {
  currentDir = fc.getCurrentDirectory().getAbsolutePath();
  File xmlPath = fc.getSelectedFile();
  ...
}

== == == == == == == == == == == == == == == == == == == == 
== 6.000.000 ways to die
== Face down, ass up - that's the way we like to fuck.
.: enjoy with a poison : injected with a poison : Грасоff :.