如何做一个干净的代码，但结果与我的代码相同？javafx hbox循环数组

Question

有6个按钮，每个按钮都有一个OnMouseEntered处理程序，将按钮的文本更改为“单击我！”还有一个OnMouseExited处理程序，它将按钮的文本更改为原始文本。

是否有任何方法可以使代码尽可能干净？怎么做呢？非常感谢!有大量重复的代码：

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListView;
import javafx.scene.layout.*;
import javafx.stage.Stage;

public class MyGUI extends Application {

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

    @Override
    public void start(Stage primaryStage) throws Exception {
        HBox root = new HBox();
        VBox vb = new VBox();
        Button[] btn = new Button[6];
        for (int i = 0; i < 6; i++) {
            btn[i] = new Button("Button" + (i + 1));
        }

        vb.getChildren().addAll(btn);
        root.getChildren().addAll(lv, vb);

        btn[0].setOnMouseEntered(e -> {
            btn[0].setText("Click Me!");
        });
        btn[1].setOnMouseEntered(e -> {
            btn[1].setText("Click Me!");
        });
        btn[2].setOnMouseEntered(e -> {
            btn[2].setText("Click Me!");
        });
        btn[3].setOnMouseEntered(e -> {
            btn[3].setText("Click Me!");
        });
        btn[4].setOnMouseEntered(e -> {
            btn[4].setText("Click Me!");
        });
        btn[5].setOnMouseEntered(e -> {
            btn[5].setText("Click Me!");
        });
        btn[0].setOnMouseExited(e -> {
            btn[0].setText("Button1");
        });
        btn[1].setOnMouseExited(e -> {
            btn[1].setText("Button2");
        });
        btn[2].setOnMouseExited(e -> {
            btn[2].setText("Button3");
        });
        btn[3].setOnMouseExited(e -> {
            btn[3].setText("Button4");
        });
        btn[4].setOnMouseExited(e -> {
            btn[4].setText("Button5");
        });
        btn[5].setOnMouseExited(e -> {
            btn[5].setText("Button6");
        });

        Scene MScene = new Scene(root, 800, 600);
        primaryStage.setTitle("My Button"); 
        primaryStage.setScene(MScene);
        primaryStage.show();
    }
}

Answer 1

有不同的解决方案取决于需求，例如：

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class MyGUI extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception {

        HBox root = new HBox();
        VBox vbox = new VBox();
        Button[] buttons = new Button[6];

        for (int i = 0; i < 6; i++) {

            String text = "Button" + (i + 1);

            Button button = new Button(text);

            button.setOnMouseEntered( e -> button.setText("Click Me!"));
            button.setOnMouseExited( e -> button.setText(text));

            buttons[i] = button;

        }

        vbox.getChildren().addAll(buttons);
        root.getChildren().addAll(vbox);

        Scene scene = new Scene(root, 800, 600);

        primaryStage.setTitle("My Button");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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