リストボックスにJavaFXコンボボックスアイテムが選択されています

Question

コンボボックスで選択したものを転送してリストボックスに表示する際に問題があります。私はそれを行う方法を正確にはわかりません。私は運がないといろいろな方法で試しました。インターネット上で与えられたすべての例はシーンビルダーを参照しています。シーンビルダでこれを作成することはできません。誰かが私に手を差し伸べて助けてくれましたか？私はそれが私が望むことをするためのアクションイベントまたはリスナーでなければならないかどうかはわかりません。 newbの質問をお許しください。ありがとうございました！！

package application; 

import java.util.List; 

import javafx.application.Application; 
import javafx.collections.FXCollections; 
import javafx.collections.ObservableList; 
import javafx.geometry.Insets; 
import javafx.geometry.Pos; 
import javafx.stage.Stage; 
import javafx.scene.Scene; 
import javafx.scene.control.Button; 
import javafx.scene.control.ComboBox; 
import javafx.scene.control.Label; 
import javafx.scene.control.ListView; 
import javafx.scene.control.TextField; 
import javafx.scene.image.Image; 
import javafx.scene.image.ImageView; 
import javafx.scene.layout.GridPane; 
import javafx.scene.text.Font; 
import javafx.scene.text.FontWeight; 

public class Main extends Application { 
@Override 
public void start(Stage primaryStage) { 
    // Pane pane = new Pane(); 

    double beverageArray[] = { 1.95, 1.50, 1.25, 2.95, 2.50, 1.50 }; 
    double appetizerArray[] = { 5.95, 6.95, 8.95, 8.95, 10.95, 12.95, 6.95 }; 
    double mainCourseArray[] = { 15.95, 13.95, 13.95, 11.95, 19.95, 20.95, 18.95, 13.95, 14.95 }; 
    double desertArray[] = { 5.95, 3.95, 5.95, 4.95, 5.95 }; 
    String[] beverages = { "Soda", "Tea", "Coffee", "Mineral Water", "Juice", "Milk" }; 
    double totalCost = 0; 

    GridPane pane = new GridPane(); 
    pane.setAlignment(Pos.TOP_LEFT); 
    pane.setPadding(new Insets(20, 20, 20, 20)); 
    pane.setHgap(5.5); 
    pane.setVgap(5.5); 

    ComboBox<String> beverageComboBox = new ComboBox<String>(); 
    ObservableList<String> items = FXCollections.observableArrayList(beverages); 
    beverageComboBox.getItems().addAll(items); 

    // ---------------------------------------------------------------------------------------------------------- 
    // final ComboBox<String> beverageComboBox = new ComboBox<String>(); 
    // beverageComboBox.getItems().addAll("Soda", "Tea", "Coffee", "Mineral 
    // Water", "Juice", 
    // "Milk"); 
    // ---------------------------------------------------------------------------------------------------------- 

    final ComboBox<String> appetizerComboBox = new ComboBox<String>(); 
    appetizerComboBox.getItems().addAll("Buffalo Wings", "Buffalo Fingers", "Potato Skins", "Nachos", 
      "Mushroom Caps", "Shrimp Cocktail"); 

    final ComboBox<String> maincourseComboBox = new ComboBox<String>(); 
    maincourseComboBox.getItems().addAll("Seafood Alfredo", "Chicken Alfredo", "Chicken Picatta", "Turkey Club", 
      "Lobster Pie", "Prime Rib", "Shrimp Scampi", "Turkey Dinner", "Stuffed Chicken"); 

    final ComboBox<String> dessertComboBox = new ComboBox<String>(); 
    dessertComboBox.getItems().addAll("Apple Pie", "Sundae", "Carrot Cake", "Mud Pie", "Apple Crisp"); 
    /* 
    * beverageComboBox.setValue("Soda"); appetizerComboB(ox.setValue(
    * "Buffalo Wings"); maincourseComboBox.setValue("Seafood Alfredo"); 
    * dessertComboBox.setValue("Apple Pie"); 
    */ 

    Image image = new Image("fd.jpg"); 
    pane.getChildren().add(new ImageView(image)); 
    // ----------------------------------------------------------------------------------------------------------- 
    Label tit = new Label("John's"); 
    tit.setFont(Font.font("Tahoma", FontWeight.BOLD, 32)); 
    pane.add(tit, 1, 0); 
    // --------------------------------------------------------------------------------------------------------------- 
    Label wi = new Label("Waiter Information"); 
    wi.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20)); 
    pane.add(wi, 0, 5); 

    Label tn = new Label("Table Number:"); 
    pane.add(tn, 0, 6); 
    TextField tnf = new TextField(); 
    pane.add(tnf, 1, 6); 

    Label wn = new Label("Waiter's Name:"); 
    pane.add(wn, 0, 7); 
    TextField twn = new TextField(); 
    pane.add(twn, 1, 7); 

    // exception handling HERE!!!!!!!!!!!!!!! 
    // --------------------------------------------------------------------------------------------------------- 
    Label mi = new Label("Menu Items"); 
    mi.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20)); 
    pane.add(mi, 0, 10); 

    Label b = new Label("Beverage:"); 
    pane.add(b, 0, 11); 
    pane.add(beverageComboBox, 1, 11); 

    Label a = new Label("Appetizer:"); 
    pane.add(a, 0, 12); 
    pane.add(appetizerComboBox, 1, 12); 

    Label mc = new Label("Main Course:"); 
    pane.add(mc, 0, 13); 
    pane.add(maincourseComboBox, 1, 13); 

    Label d = new Label("Dessert:"); 
    pane.add(d, 0, 14); 
    pane.add(dessertComboBox, 1, 14); 
    // ---------------------------------------------------------------------------------------------------------- 
    Label bi = new Label("Bill"); 
    bi.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20)); 
    pane.add(bi, 0, 17); 

    Label st = new Label("Subtotal:"); 
    pane.add(st, 0, 18); 
    TextField tst = new TextField(); 
    pane.add(tst, 1, 18); 

    Label t = new Label("Tax:"); 
    pane.add(t, 0, 19); 
    TextField tt = new TextField(); 
    pane.add(tt, 1, 19); 

    Label to = new Label("Total:"); 
    pane.add(to, 0, 20); 
    TextField tto = new TextField(); 
    pane.add(tto, 1, 20); 
    // ----------------------------------------------------------------------------------------------------------- 
    Label w = new Label("Waiter:"); 
    pane.add(w, 0, 23); 
    TextField tw = new TextField(); 
    pane.add(tw, 1, 23); 

    Label tn2 = new Label("Table Num:"); 
    pane.add(tn2, 0, 24); 
    TextField ttn = new TextField(); 
    pane.add(ttn, 1, 24); 
    // ------------------------------------------------------------------------------------------------------------ 
    Button btn = new Button(" Clear Bill "); 
    pane.add(btn, 1, 30); 
    // ------------------------------------------------------------------------------------------------------------- 

    Label io = new Label("Items Ordered"); 
    io.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20)); 
    pane.add(io, 2, 3); 
    // ----------------------------------------------------------------------------------------------------------------------- 
    Label bo = new Label("Beverage Ordered"); 
    pane.add(bo, 2, 5); 

    ListView<String> list = new ListView<>(); 

    ObservableList<String> items1 = FXCollections.observableArrayList(beverages); 
    // list.setItems(items1); 
    beverageComboBox.getItems().addAll(items1); 

    pane.add(list, 3, 5); 
    GridPane.setRowSpan(list, 5); 

    beverageComboBox.setOnAction(e -> setDisplay(items.indexOf(beverageComboBox.getValue()))); 

    /* 
    * list.getSelectionModel().selectedItemProperty().addListener(ov -> { 
    * pane.getChildren().clear(); for (Integer i: 
    * list.getSelectionModel().getSelectedIndices()){ 
    * pane.getChildren().add(beverages[i]); } }); 
    */ 
    // --------------------------------------------------------------------------------------------------------------- 
    Label ao = new Label("Appetizer Ordered"); 
    pane.add(ao, 2, 10); 

    ListView<String> list2 = new ListView<>(); 

    ObservableList<String> items2 = FXCollections.observableArrayList(); 
    list2.setItems(items2); 

    pane.add(list2, 3, 10); 
    GridPane.setRowSpan(list2, 5); 
    // ---------------------------------------------------------------------------------------------------------------- 
    Label mco = new Label("Main Course Ordered"); 
    pane.add(mco, 2, 15); 

    ListView<String> list3 = new ListView<>(); 

    ObservableList<String> items3 = FXCollections.observableArrayList(); 
    list3.setItems(items3); 

    pane.add(list3, 3, 15); 
    GridPane.setRowSpan(list3, 5); 
    // ------------------------------------------------------------------------------------------------------------------- 
    Label od = new Label("Dessert Ordered"); 
    pane.add(od, 2, 20); 

    ListView<String> list4 = new ListView<>(); 

    ObservableList<String> items4 = FXCollections.observableArrayList(); 
    list4.setItems(items4); 

    pane.add(list4, 3, 20); 
    GridPane.setRowSpan(list4, 5); 

    // Create a new scene and place it in the stage 
    Scene scene = new Scene(pane, 800, 800); 
    primaryStage.setTitle("Restaurant Bill Calculator"); 
    primaryStage.setScene(scene); 
    primaryStage.show(); 

} 
} 

Answer 1

beverageComboBox.setOnAction((e) -> { 
    list.getItems().add(beverageComboBox.getSelectionModel().getSelectedItem()); 
});