import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import javax.swing.JFileChooser;
public class Main {
public static void main(String[] argv) throws Exception {
final JFileChooser chooser = new JFileChooser();
chooser.addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
if (JFileChooser.DIRECTORY_CHANGED_PROPERTY.equals(evt.getPropertyName())) {
JFileChooser chooser = (JFileChooser) evt.getSource();
File oldDir = (File) evt.getOldValue();
File newDir = (File) evt.getNewValue();
File curDir = chooser.getCurrentDirectory();
}
}
});
}
}