Collections and Concurrency - JavaFX 8: A Definitive Guide to Building Desktop, Mobile, and Embedded Java Clients - page 275

Listing 7-2. ListChangeEventExample.java
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
public class ListChangeEventExample {
public static void main(String[] args) {
ObservableList<String> strings = FXCollections.observableArrayList();
strings.addListener(new MyListener());
System.out.println("Calling addAll(\"Zero\", \"One\", \"Two\", \"Three\"): ");
strings.addAll("Zero", "One", "Two", "Three");
System.out.println("Calling FXCollections.sort(strings): ");
FXCollections.sort(strings);
System.out.println("Calling set(1, \"Three_1\"): ");
strings.set(1, "Three_1");
System.out.println("Calling setAll(\"One_1\", \"Three_1\", \"Two_1\", \"Zero_1\"): ");
strings.setAll("One_1", "Three_1", "Two_1", "Zero_1");
System.out.println("Calling removeAll(\"One_1\", \"Two_1\", \"Zero_1\"): ");
strings.removeAll("One_1", "Two_1", "Zero_1");
}
private static class MyListener implements ListChangeListener<String> {
@Override
public void onChanged(Change<? extends String> change) {
System.out.println("\tlist = " + change.getList());
System.out.println(prettyPrint(change));
}
private String prettyPrint(Change<? extends String> change) {
StringBuilder sb = new StringBuilder("\tChange event data:\n");
int i = 0;
while (change.next()) {
sb.append("\t\tcursor = ")
.append(i++)
.append("\n");
final String kind =
change.wasPermutated() ? "permutated" :
change.wasReplaced() ? "replaced" :
change.wasRemoved() ? "removed" :
change.wasAdded() ? "added" : "none";
sb.append("\t\tKind of change: ")
.append(kind)
.append("\n");