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私はJavaFXの初心者でもありますが、Javaで一般的にデータベースを使用することに慣れていませんが、既存のJavaFXプログラムを変換してTableViewデータベースのアイテムと置き換えて、ユーザーに追加または削除する権限を与えます。これは、本質的に、学生のためのコース登録プログラムの非常に単純化されたバージョンです。すべてがそのまま動作します。教員側でどのクラスの学生が登録されているかを見るために、データベースを使用するだけです。私は、データベースを呼び出してtableViewに適用する最善の方法に慣れていません。私はテーブル上の行を選択し、自分のアクションボタンをクリックしてその学生を登録できるようにしたい。どんな助けでも大歓迎です。データベースでテーブルビューを使用しているJavafx
コード：
public class Screen3Controller implements Initializable {
@FXML private Button continuebtn;
@FXML private Button studAddCrseBtn;
@FXML private Button yesBtn;
@FXML private Label regStatus;
@FXML private TableView<SummerClass> table;
@FXML private TableColumn<SummerClass, Integer> id;
@FXML private TableColumn<SummerClass, String> dept;
@FXML private TableColumn<SummerClass,Integer> number;
@FXML private TableColumn<SummerClass, String> title;
@FXML private TableColumn<SummerClass, String> day;
@FXML private TableColumn<SummerClass, String> time;
@FXML private TableColumn<SummerClass, Boolean> checkbox;
private ObservableSet<CheckBox> selectedCheckBoxes = FXCollections.observableSet();
private ObservableSet<CheckBox> unselectedCheckBoxes = FXCollections.observableSet();
private IntegerBinding numCheckBoxesSelected = Bindings.size(selectedCheckBoxes);
@FXML
private IntegerProperty index = new SimpleIntegerProperty();
private final int maxNumSelected = 3;
public ObservableList<SummerClass> list1 = FXCollections.observableArrayList(
new SummerClass (10001, "ACCT", 1010 , "Intro to Acct (3)", "MWF", "1:00 - 2:15"),
new SummerClass (10002, "ACCT", 2010 , "Acct for Bus. (3)", "MWF", "9:00 - 10:15"),
new SummerClass (10003, "ART", 1010 , "Fund. of Art (3)", "TR", "3:00 - 4:15"),
new SummerClass (10004, "ART", 1110 , "Art History (3)", "MWF", "1:00 - 2:15"),
new SummerClass (10005, "BIOL", 1010 , "Principles of Biology I (3)", "TR", "9:00 - 10:15"),
new SummerClass (10006, "BIOL", 2010 , "Principles of Biology II (3)", "MWF", "3:00 - 4:15"),
new SummerClass (10007, "CHEM", 1010 , "Principles of Chemistry I (3)", "MWF", "1:00 - 2:15"),
new SummerClass (10008, "CHEM", 2010 , "Principles of Chemistry II (3)", "TR", "9:00 - 10:15"),
new SummerClass (10009, "CPSC", 1010 , "Java I (3)", "TR", "3:00 - 4:15"),
new SummerClass (10010, "CPSC", 2010 , "Java II (3)", "MWF", "9:00 - 10:15"),
new SummerClass (10011, "ENGL", 1010 , "Composition I (3)", "MWF", "1:00 - 2:15"),
new SummerClass (10012, "ENGL", 2010 , "Composition II (3)", "TR", "3:00 - 4:15"),
new SummerClass (10013, "FIN", 1010 , "Principles of Finance I (3)", "MWF", "1:00 - 2:15"),
new SummerClass (10014, "FIN", 2010 , "Principles of Finance II (3)", "TR", "9:00 - 10:15"),
new SummerClass (10015, "GEO", 1010 , "Intro to Geology (3)", "MWF", "3:00 - 4:15"),
new SummerClass (10016, "GEO", 3610 , "Geology in History (3)", "TR", "1:00 - 2:15"),
new SummerClass (10017, "HIST", 1210 , "Western History (3)", "MWF", "9:00 - 10:15"),
new SummerClass (10018, "HIST", 1510 , "Fund. of History (3)", "MWF", "3:00 - 4:15"),
new SummerClass (10019, "MATH", 1010 , "Elementary Algebra (3)", "TR", "1:00 - 2:15"),
new SummerClass (10020, "MATH", 2010 , "Linear Algebra (3)", "MWF", "9:00 - 10:15"),
new SummerClass (10021, "NUTR", 1010 , "Nutrition Fundamentals (3)", "TR", "3:00 - 4:15"),
new SummerClass (10022, "PHYS", 1010 , "Intro to Physics (3)", "MWF", "1:00 - 2:15"),
new SummerClass (10023, "PHYS", 2010 , "Physics II (3)", "MWF", "9:00 - 10:15"),
new SummerClass (10024, "POL", 1010 , "Political Science I (3)", "TR", "3:00 - 4:15"),
new SummerClass (10025, "POL", 1010 , "Political Science II (3)", "MWF", "1:00 - 2:15"),
new SummerClass (10026, "STEM", 1010 , "Stem Education I (3)", "TR", "9:00 - 10:15"),
new SummerClass (10027, "STEM", 2010 , "Advanced Stem Education (3)", "TR", "3:00 - 4:15"),
new SummerClass (10028, "STEM", 3010 , "Stem Education in Business (3)", "MWF", "1:00 - 2:15"));
final ObservableList<SummerClass> list2 = FXCollections.observableArrayList();
@Override
public void initialize(URL location, ResourceBundle resources) {
id.setCellValueFactory(new PropertyValueFactory<>("id"));
dept.setCellValueFactory(new PropertyValueFactory<>("dept"));
number.setCellValueFactory(new PropertyValueFactory<>("number"));
title.setCellValueFactory(new PropertyValueFactory<>("title"));
day.setCellValueFactory(new PropertyValueFactory<>("day"));
time.setCellValueFactory(new PropertyValueFactory<>("time"));
checkbox.setCellValueFactory(new PropertyValueFactory<SummerClass, Boolean>(""));
checkbox.setCellFactory(new Callback<TableColumn<SummerClass, Boolean>, TableCell<SummerClass, Boolean>>(){
public TableCell<SummerClass, Boolean> call(TableColumn<SummerClass, Boolean> p){
return new CheckBoxTableCell<SummerClass, Boolean>();
}