[FIXED] is there any way to iteratively print (or after a Sec) the table records in tableView (javaFX)

Issue

i have made some person class objects i'm printing their variable properties by using ObserveableList and calling it in initialize method the problem is i am not getting it how can i print each object separately, these are printed as whole i want to iterate through one-by-one

    Person p1 = new Person("1001", "person1", "11");
    Person p2 = new Person("1002", "person2", "12");
    Person p3 = new Person("1003", "person3", "13");
    Person p4 = new Person("1004", "person4", "14");

    ObservableList<Person> personDataTable = FXCollections.observableArrayList(p1, p2, p3, p4);


    @Override
    public void initialize(URL location, ResourceBundle resources) {
            printTable();
    }

    public void printTable() {
            tableID.setCellValueFactory(new PropertyValueFactory<Person, String>("id"));
            tableName.setCellValueFactory(new PropertyValueFactory<Person, String>("name"));
            tableAge.setCellValueFactory(new PropertyValueFactory<Person, String>("age"));
            tableView.setItems(personDataTable);
    }

To clarify, you want to add one person to the table, wait a second, add the next person, wait another second, add the next person, and so on, correct? yes, exactly (i can't reply to comment)

Solution

The key to this is Timeline. Basically, use a counter and make sure to stop the Timeline when the counter is greater than or equal to the size of the List that holds the person objects. MCVE below:

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 *
 * @author Sedrick
 */
public class JavaFXApplication86 extends Application {
    Timeline timeline;
    AtomicInteger counter;

    @Override
    public void start(Stage primaryStage) {
        Person p1 = new Person("1001", "person1", "11");
        Person p2 = new Person("1002", "person2", "12");
        Person p3 = new Person("1003", "person3", "13");
        Person p4 = new Person("1004", "person4", "14");
        List<Person> personList = new ArrayList();
        personList.add(p1);
        personList.add(p2);
        personList.add(p3);
        personList.add(p4);        

        counter = new AtomicInteger();
        TableView<Person> tableView = new TableView();
        TableColumn<Person, String> tableId = new TableColumn("ID");
        TableColumn<Person, String> tableName = new TableColumn("Name");
        TableColumn<Person, String> tableAge = new TableColumn("Age");

        ObservableList<Person> personDataTable = FXCollections.observableArrayList();
        tableView.setItems(personDataTable);

        tableId.setCellValueFactory(new PropertyValueFactory("id"));
        tableName.setCellValueFactory(new PropertyValueFactory("name"));
        tableAge.setCellValueFactory(new PropertyValueFactory("age"));

        timeline = new Timeline(new KeyFrame(Duration.seconds(1), event ->{
            if(counter.get() >= personList.size())
            {
                timeline.stop();
            }else{
                personDataTable.add(personList.get(counter.getAndIncrement()));
            }
        }));
        timeline.setCycleCount(Timeline.INDEFINITE);
        timeline.play();




        tableView.getColumns().addAll(tableId, tableName, tableAge);


        StackPane root = new StackPane(tableView);

        Scene scene = new Scene(root, 300, 250);

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

}

Answered By - Sedrick