Lambda : List with Lambda expressions

import java.util.ArrayList;

import java.util.List;

public class LambdaComparator {

       public static void main(String[] args) {

              List strings = new ArrayList<>();      

              strings.add("actor");

              strings.add("bat");

              strings.add("do");

              strings.add("i");

              strings.sort((a, b)-> Integer.compare(a.length(), b.length()));

              strings.forEach(System.out::println);

       }

}

Output:

i

do

bat

actor