length of each element in an array Java

Question

Here is what I\'m trying to use. The method .length doesn\'t work for anything I try, so I\'m not even sure where to begin.

import java.util.ArrayList;

public c         


        

Answer 1

For Java 8 user

public static void main(final String[] args) {

  List strings = Arrays.asList("Hi", "Hello", "how r u?");
  List lengthList = lengths(strings);
  lengthList.forEach(System.out::println);
}

public static List lengths(List list) {

 return list.stream().mapToInt(s -> s.length()).boxed()
    .collect(Collectors.toList());
//OR
return list.stream().mapToInt(String::length).boxed()
    .collect(Collectors.toList());
}