javax.swing.event.ListSelectionEvent evt)
  {
    int index = listFields.getSelectedIndex();
    DefaultListModel listModel = (DefaultListModel) listFields.getModel();
    FieldDetails fd = (FieldDetails) listModel.elementAt(index);
    tfFieldName.setText(fd.getFieldName());
    cbFieldType.setSelectedItem(fd.getFieldType());
    tfFieldLength.setText(fd.getFieldLength());
    tfDefault.setText(fd.getDefault());