Java tutorial
import java.util.ArrayList; import java.util.Collections; import java.util.List; public class Main { public static void main(String[] args) { List<String> list = new ArrayList<>(); list.add("J"); list.add("R"); list.add("C"); list.add("X"); System.out.println("List: " + list); // Uses Comparable implementation in String class // to sort the list in natural order Collections.sort(list); System.out.println("Sorted List: " + list); } }