import java.util.List;

import javafx.collections.FXCollections;
import javafx.collections.SortedList;

public class TestSortedList implements Comparable<TestSortedList> {

    private int value;

    public TestSortedList(int value) {
        this.value = value;
    }

    @Override
    public String toString() {
        return String.valueOf(value);
    }

    @Override
    public int compareTo(TestSortedList o) {
        return Integer.valueOf(this.value).compareTo(o.value);
    }

    public static void main(String[] args) {
        List<TestSortedList> original = FXCollections.observableArrayList(
                new TestSortedList(1), new TestSortedList(2),
                new TestSortedList(3), new TestSortedList(4));
        SortedList<TestSortedList> sorted = new SortedList<TestSortedList>(
                original);

        System.out.println(sorted);
        original.get(3).value = 0;
        original.set(3, original.get(3));
        System.out.println(sorted);
    }
}