требуется помощь с задачей не из курса

подскажите что тут делать: /** * Complete the code, parse integers, calculate the sum of numbers in the WORDS, join strings with * space delimiter */ public class ParseIntegers { private static final List<String> WORDS = Arrays.asList( "JDK 17 has released on 14 September 2021 with 10 new features, 2 feature removals and 2 feature deprecations." .split(" ")); public static void main(String[] args) { Iterator<String> words = WORDS.iterator(); int sum = 0; String justWords = ""; while (words.hasNext()) { String next = words.next(); int number = Integer.parseInt(next); // todo: complete it } System.out.println("Sum is " + sum); System.out.println("Just words:" + justWords); } }