延迟函数的执行，直到从javafx窗口返回字符串值

import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Modality;
import javafx.stage.Stage;

public class DelayedExecutionExample extends Application {

    private String userInput;

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        Button openDialogButton = new Button("Open Dialog");
        openDialogButton.setOnAction(event -> openDialog(primaryStage));

        VBox root = new VBox(openDialogButton);
        Scene scene = new Scene(root, 200, 200);

        primaryStage.setScene(scene);
        primaryStage.show();
    }

    private void openDialog(Stage ownerStage) {
        Stage dialogStage = new Stage();
        dialogStage.initOwner(ownerStage);
        dialogStage.initModality(Modality.APPLICATION_MODAL);

        TextField inputField = new TextField();
        Button submitButton = new Button("Submit");
        submitButton.setOnAction(event -> {
            userInput = inputField.getText();
            dialogStage.close();
        });

        VBox dialogRoot = new VBox(inputField, submitButton);
        Scene dialogScene = new Scene(dialogRoot, 200, 200);

        dialogStage.setScene(dialogScene);
        dialogStage.showAndWait();

        // 延迟函数的执行，直到从JavaFX窗口返回字符串值
        delayedExecution();
    }

    private void delayedExecution() {
        Thread delayThread = new Thread(() -> {
            while (userInput == null) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

            // 从JavaFX窗口返回字符串值后执行的代码
            System.out.println("User input: " + userInput);
        });

        delayThread.start();
    }
}