JavaFX输入并显示字符串

注意修改参数

package javaseniorprograme;

import java.util.ArrayList;
import javafx.application.Application;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.scene.Scene;import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import static javafx.scene.input.KeyEvent.KEY_TYPED;
import javafx.scene.layout.BorderPane;import javafx.scene.layout.Pane;
import javafx.scene.text.Font;
import javafx.scene.text.FontPosture;
import javafx.scene.text.Text;
import javafx.stage.Stage;

/**
 * 输入并显示字符串
 * @author ASUS
 */
public class Exercise15_10 extends Application{
    static ArrayList aList = new ArrayList();
    @Override
    public void start(Stage primaryStage){
        // 创建文本
        Text text = new Text();
        text.setFont(Font.font("Arial", FontPosture.ITALIC, 20)); 
        text.setText("6");
        
        BorderPane pane = new BorderPane();
        pane.setCenter(text);
        Scene scene = new Scene(pane,600,300);
        primaryStage.setTitle("Exercise15_10");
        primaryStage.setScene(scene);
        primaryStage.show();
        // 文本获得响应
        text.requestFocus();
        // 键盘事件1
        text.setOnKeyTyped(e->{
          aList.add(e.getCharacter());
          //text.setText(String.join("", aList));
        });
        // 键盘事件2
        text.setOnKeyPressed(e->{
            if(e.getCode()==KeyCode.ENTER){
                text.setText(String.join("", aList));
            }
        });
    }
   
    public static void main(String[] args){
        Application.launch(args);
    }
}