Sort List Using Comparator Nulls First

SortListUsingComparatorNullsFirst.java

import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

public class SortListUsingComparatorNullsFirst {
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>(){{
            add(6);
            add(null);
            add(8);
            add(null);
            add(4);
        }};

        //output: [null, null, 4, 6, 8]
        list.sort(Comparator.nullsFirst(Comparator.naturalOrder()));

        System.out.println(list);
    }
}