JavaFxUI控件与代码间的绑定方法

@Override
 public void start(Stage primaryStage) throws Exception{
  Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
  BorderPane borderPane = (BorderPane)root.lookup("#iiid");

  TableView tableView = new TableView();
  TableColumn columnName = new TableColumn("姓名");
  TableColumn columClass = new TableColumn("班级");
  TableColumn columNum = new TableColumn("学号");
  tableView.getColumns().addAll(columnName, columClass, columNum);

  borderPane.setCenter(tableView);

  primaryStage.setTitle("应用测试");
  primaryStage.setScene(new Scene(root,500,500));
  primaryStage.show();
}