import java.util.*;

public class LongestWord {
    public static List<String> findLongestWord(String sentence) {
        List<String> result = new ArrayList<>();
        if (sentence == null || sentence.isEmpty()) return result;
        String[] words = sentence.split("\\s+");
        int maxLength = 0;

        for (String word : words) {
            if (word.length() > maxLength) {
                maxLength = word.length();
                result.clear();
                result.add(word);
            } else if (word.length() == maxLength) {
                result.add(word);
            }
        }
        return result;
    }

    public static void main(String[] args) {
        String sentence = "Java is versatile";
        System.out.println("Longest Word(s): " + findLongestWord(sentence));
    }
}