我是社区的新手，我真的不知道如何在这里寻求帮助。我试图为警报弹出窗口创建一个关闭按钮，但出现语法错误。我还想在窗口完全关闭之前执行一些操作。

这是调用窗口出现的驱动程序：

package sample;

import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.StageStyle;

import java.awt.*;
import java.io.IOException;


public class Controller {

    public static String name;

    public void removeButtonpressed() throws IOException {
        name = "Hello world";
        alertController a = new alertController().starWindow();

    }

}

这是警报的控制器

package sample;

import javafx.application.Platform;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.control.Button;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.Label;

import java.awt.event.MouseEvent;
import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;

public class alertController implements Initializable {

    @FXML
    private Label label = new Label();
    private String s = Controller.name;


    public alertController starWindow() throws IOException {

        Parent root = FXMLLoader.load(getclass().getResource("alert.fxml"));
        Stage window = new Stage();
        window.initModality((Modality.APPLICATION_MODAL));
        window.setTitle("");
        Scene scene = new Scene(root);
        window.setScene(scene);
        window.show();
        return null;
    }

    private void closeButton(MouseEvent event){
        Stage s = (Stage) ((Node)event.getsource().getScene().getWindow()); 
/*I'm getting problems with this part of my code
 the IDE gives me trouble with getScene()*/
        s.close();
    }


    @Override
    public void initialize(URL location,ResourceBundle resources) {
        label.setText(s);
    }
}

这是警报的FXML文件

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.effect.*?>
<?import javafx.scene.text.*?>
<?import javafx.geometry.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>

<VBox maxHeight="141.0" maxWidth="394.0" prefHeight="119.0" prefWidth="307.0" style="-fx-background-radius: 5;" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.alertController">
   <children>
      <AnchorPane>
         <children>
            <Label fx:id="label" layoutX="28.0" layoutY="20.0" maxHeight="35.0" maxWidth="149.0" text="Are You Sure?">
               <font>
                  <Font name="System Bold" size="20.0" />
               </font>
            </Label>
         </children>
      </AnchorPane>
      <Separator maxWidth="307.0">
         <VBox.margin>
            <Insets bottom="10.0" />
         </VBox.margin>
      </Separator>
      <HBox prefHeight="38.0" prefWidth="297.0" spacing="10.0">
         <children>
            <Region HBox.hgrow="ALWAYS" />
            <Button maxHeight="44.0" maxWidth="58.0" mnemonicParsing="false" text="Yes">
               <font>
                  <Font size="15.0" />
               </font>
            </Button>
            <Button maxHeight="44.0" maxWidth="55.0" mnemonicParsing="false" onmouseclicked="#closeButton" text="No">
               <HBox.margin>
                  <Insets right="30.0" />
               </HBox.margin>
               <font>
                  <Font size="15.0" />
               </font>
            </Button>
         </children>
         <VBox.margin>
            <Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
         </VBox.margin>
      </HBox>
   </children>
</VBox>

我也尝试使用setOnaction，但是发生了相同的错误。

非常感谢您！