There is a source csv data file. Depending on the content of the file you need to create a table. The number of rows in the table is equal to the number of rows in the file, the number of columns is respectively equal to the number of values in one row. Here is the actual code:
Class inputDate.java
public class InputDate { private ArrayList<String> items = new ArrayList<>(); public InputDate(String[] items){ this.items.addAll(Arrays.asList(items)); } public ArrayList<String> getItems(){ return items; } } JavaFXKursovaya.java class
public class JavaFXKursovaya extends Application { private TabPane root = new TabPane(); private ObservableList<InputDate> os1 = FXCollections.observableArrayList(); private int rowsInpDate = 0; private int colsInpDate = 0; @Override public void start(Stage primaryStage) { //Create view Tab tab1 = new Tab("Загрузка БД"); HBox navDB = new HBox(20.0); Button downloadDB = new Button("Загрузить БД"); ComboBox listOfTables = new ComboBox(); FlowPane content_tab1 = new FlowPane(Orientation.VERTICAL); TableView<InputDate> tableDB = new TableView(); downloadDB.setOnAction((ae)-> { createContent_tab1(tableDB); }); navDB.getChildren().addAll(downloadDB, listOfTables); content_tab1.getChildren().addAll(navDB, tableDB); tab1.setContent(content_tab1); root.getTabs().add(tab1); //settings for root root.setTabClosingPolicy(TabClosingPolicy.UNAVAILABLE); //Creating the scene primaryStage.setTitle("Система обработки входных данных"); primaryStage.setScene(new Scene(root, 800, 600)); primaryStage.show(); } //First tab controller public void createContent_tab1(TableView<InputDate> tableDB){ tableDB.getColumns().clear(); tableDB.getItems().clear(); csvParser(); //Fill the table for(int i = 0; i <= colsInpDate - 1; i++){ TableColumn<InputDate, String> tableColumn = new TableColumn<>("" + i); tableColumn.setCellValueFactory(new PropertyValueFactory<>("items[" + i + "]")); tableDB.getColumns().add(tableColumn); } for (int i = 0; i < os1.size(); i++) System.out.println("os1 index " + i + " = " + os1.get(i).getItems()); tableDB.setItems(os1); tableDB.setEditable(false); tableDB.setFixedCellSize(25.0); } //Parser for csv file public void csvParser(){ String csvFile = "C://Users/Wixes/Desktop/Development/Software" + "/JavaFXKursovaya/src/javafxkursovaya/csvFiles/text.csv"; String line = ""; String csvSplitBy = ","; try (BufferedReader br = new BufferedReader(new FileReader(csvFile))){ rowsInpDate = 0; colsInpDate = 0; while ((line = br.readLine()) != null){ rowsInpDate += 1; System.out.println("rows = " + rowsInpDate); String[] fields = line.split(csvSplitBy, -1); colsInpDate = fields.length; System.out.println("cols = " + colsInpDate); InputDate inpd = new InputDate(fields); System.out.println("input date model = " + inpd.getItems()); os1.add(inpd); } } catch (IOException e){ e.printStackTrace(); } } /** * @param args the command line arguments */ public static void main(String[] args) { launch(args); } } text.csv
0,1,2,3,4,5 6,7,8,9,10,11 12,13,14,15,16,17 Measurement Control System.out.println displays:
rows = 1 cols = 6 input date model = [0, 1, 2, 3, 4, 5] rows = 2 cols = 6 input date model = [6, 7, 8, 9, 10, 11] rows = 3 cols = 6 input date model = [12, 13, 14, 15, 16, 17] os1 index 0 = [0, 1, 2, 3, 4, 5] os1 index 1 = [6, 7, 8, 9, 10, 11] os1 index 2 = [12, 13, 14, 15, 16, 17] When you click on the button, a table is created with the correct number of columns and rows (when you click on the rows, they are highlighted, if there are 3 rows in the csv, then in table 3, if 5, then in table 5, etc.). But the data in the table is not displayed, all cells are empty. There is a suspicion that incorrectly created the InputDate class, but attempts to modify it did not lead to any result. What have I done wrong?
