手动|以编程方式启动JavaFX TextField ActionEvent

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class Main extends Application {

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

    @Override
    public void start(Stage primaryStage) {
        TextField textField = new TextField();
        Button button = new Button("Submit");

        button.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                // 在这里编写处理逻辑
                String inputText = textField.getText();
                System.out.println("用户输入的文本：" + inputText);
            }
        });

        VBox root = new VBox();
        root.getChildren().addAll(textField, button);

        Scene scene = new Scene(root, 300, 200);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}