JavaFX ObservableList Sample

JavaFXObservableListSample.java

// Main.java class

import java.util.ArrayList;
import java.util.List;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;

/**
 *
 * @author omers
 */
public class Main {
    
  public static void main(String[] args) {
        List<String> list = new ArrayList<String>();

        ObservableList<String> observableList = FXCollections.observableList(list);
        observableList.addListener(new ListChangeListener() {

            @Override
            public void onChanged(ListChangeListener.Change change) {
                System.out.println("Detected a change! ");
                while (change.next()) {
                    System.out.println("Was added? " + change.wasAdded());
                    System.out.println("Was removed? " + change.wasRemoved());
                    System.out.println("Was replaced? " + change.wasReplaced());
                    System.out.println("Was permutated? " + change.wasPermutated());
                }
            }
        });
        observableList.add("item one");
        list.add("item two");
        System.out.println("Size: " + observableList.size());

    }
}

// Output :
// Detected a change! 
// Was added? true
// Was removed? false
// Was replaced? false
// Was permutated? false
// Size: 2