private void switchSearchFunction() {
   if (requestDispatcher.getNumberOfField() == 0) {
     searchTextField.setEditable(false);
     resetButton.setEnabled(false);
   } else {
     searchTextField.setEditable(true);
     resetButton.setEnabled(true);
   }
 }
 private void updateSearchResult() {
   String[] keywords = searchTextField.getText().split(" ");
   requestDispatcher.searchMethodInfoList(keywords);
 }