addAll() 方法不起作用？

Question

所以也许我没有按照预期的方式使用它，但我在 youtube 用户 thenewboston 观看的视频中使用了它，并且效果很好。帮助将不胜感激

package checkers;

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.FlowLayout;
import javafx.scene.Scene  ;
import javafx.scene.control.*;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.application.*;
import javafx.stage.*;


public class Checkers extends Application {

    Stage window;

    public void start(Stage primaryStage) throws Exception {

        window = primaryStage;
        window.setTitle("Title");

        HBox layout = new HBox();
        Button  startButton = new Button("Start");
        Button quitButton = new Button("Quit");
        layout.getChildren().addAll(startButton, quitButton);

        Scene startScene = new Scene(layout, 400, 300);

        window.setScene(startScene);
        window.show();

    }

    public static void main(String[] args) {

        launch(args);

    }

}

`

我收到的错误如下 - "The method addAll(int, Collection) in the type List is not applicable for the arguments (Button, Button)"

Answer 1

您导入了错误类型的 Button。你想要 import javafx.scene.control.Button; 而不是 import java.awt.Button;

addAll() 方法不起作用？

addAll() method not working?

java

user-interface

javafx