Java Stream - 如何使用Comparator.naturalOrder()

import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
// sort is a default method
// naturalOrder is a static method

public class Main {
  public static void main(String... args) {

    List<Integer> numbers = Arrays.asList(3, 5, 1, 2, 6);
    numbers.sort(Comparator.naturalOrder());
    System.out.println(numbers);

  }

}