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import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
 
/*Based on SO Answer : https://stackoverflow.com/a/41663687/3992939   */
public class TableController {
 
    private final ObservableList<Item> items = FXCollections.observableArrayList();
 
    @FXML
    private void initialize() {
        items.setAll(createItems());
    }
 
    @FXML
    private void loadItems() {
        items.addAll(createMoreItems());
    }
 
    private List<Item> createItems() {
        return IntStream.rangeClosed(0, 9)
                .mapToObj(i -> "Item "+i)
                .map(Item::new)
                .collect(Collectors.toList());
    }
    private List<Item> createMoreItems() {
        return IntStream.rangeClosed(items.size(), items.size()+10)
                .mapToObj(i -> "Item "+i)
                .map(Item::new)
                .collect(Collectors.toList());
    }
 
    public ObservableList<Item> getItems() {
        return items ;
    }
 
 
    public static class Item {
        private final StringProperty name = new SimpleStringProperty();
 
        public Item(String name) {
            setName(name);
        }
 
        public final StringProperty nameProperty() {
            return name;
        }
 
        public final java.lang.String getName() {
            return nameProperty().get();
        }
 
        public final void setName(final java.lang.String name) {
            nameProperty().set(name);
        }
    }
}

Main.java:10: error: class TableController is public, should be declared in a file named TableController.java
public class TableController {
       ^
Main.java:4: error: package javafx.beans.property does not exist
import javafx.beans.property.SimpleStringProperty;
                            ^
Main.java:5: error: package javafx.beans.property does not exist
import javafx.beans.property.StringProperty;
                            ^
Main.java:6: error: package javafx.collections does not exist
import javafx.collections.FXCollections;
                         ^
Main.java:7: error: package javafx.collections does not exist
import javafx.collections.ObservableList;
                         ^
Main.java:8: error: package javafx.fxml does not exist
import javafx.fxml.FXML;
                  ^
Main.java:12: error: cannot find symbol
    private final ObservableList<Item> items = FXCollections.observableArrayList();
                  ^
  symbol:   class ObservableList
  location: class TableController
Main.java:37: error: cannot find symbol
    public ObservableList<Item> getItems() {
           ^
  symbol:   class ObservableList
  location: class TableController
Main.java:43: error: cannot find symbol
        private final StringProperty name = new SimpleStringProperty();
                      ^
  symbol:   class StringProperty
  location: class Item
Main.java:49: error: cannot find symbol
        public final StringProperty nameProperty() {
                     ^
  symbol:   class StringProperty
  location: class Item
Main.java:14: error: cannot find symbol
    @FXML
     ^
  symbol:   class FXML
  location: class TableController
Main.java:19: error: cannot find symbol
    @FXML
     ^
  symbol:   class FXML
  location: class TableController
Main.java:12: error: cannot find symbol
    private final ObservableList<Item> items = FXCollections.observableArrayList();
                                               ^
  symbol:   variable FXCollections
  location: class TableController
Main.java:43: error: cannot find symbol
        private final StringProperty name = new SimpleStringProperty();
                                                ^
  symbol:   class SimpleStringProperty
  location: class Item
14 errors

Standard output is empty