public class ConstructorMethodReference {
    public static void main(String args[]) {
        final List<Integer> list = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
        // Method Reference
        copyElements(null, ArrayList<Integer>::new);
        // Lambda expression
        copyElements(list, () -> new ArrayList<Integer>());
    }

    private static void copyElements(final List<Integer> list, final Supplier<Collection<Integer>> targetCollection) {
        // Method reference to a particular instance
        list.forEach(targetCollection.get()::add);
    }
}