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("Java"); list.add("R"); list.add("CSS"); list.add("XML"); Collections.sort(list); System.out.println("List: " + list); Collections.reverse(list); System.out.println("List: " + list); } }