Binding hashmap with tableview (JavaFX)

Question

I want to display HashMap contents in a JavaFX Tableview. Please find below the code I used to set the HashMap contents into the tabl

Answer 1

1. CellFactory.Callback.call() creates just one cell, not all cells in a loop
2. Using return from a loop breaks loop execution.

Take a look at next example, especially comments:

public class MapTableView extends Application {

    @Override
    public void start(Stage stage) {

        // sample data
        Map map = new HashMap<>();
        map.put("one", "One");
        map.put("two", "Two");
        map.put("three", "Three");


        // use fully detailed type for Map.Entry 
        TableColumn, String> column1 = new TableColumn<>("Key");
        column1.setCellValueFactory(new Callback, String>, ObservableValue>() {

            @Override
            public ObservableValue call(TableColumn.CellDataFeatures, String> p) {
                // this callback returns property for just one cell, you can't use a loop here
                // for first column we use key
                return new SimpleStringProperty(p.getValue().getKey());
            }
        });

        TableColumn, String> column2 = new TableColumn<>("Value");
        column2.setCellValueFactory(new Callback, String>, ObservableValue>() {

            @Override
            public ObservableValue call(TableColumn.CellDataFeatures, String> p) {
                // for second column we use value
                return new SimpleStringProperty(p.getValue().getValue());
            }
        });

        ObservableList> items = FXCollections.observableArrayList(map.entrySet());
        final TableView> table = new TableView<>(items);

        table.getColumns().setAll(column1, column2);

        Scene scene = new Scene(table, 400, 400);
        stage.setScene(scene);
        stage.show();
    }

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