package JavaOOP.HomeWork1;

import java.util.ArrayList;
import java.util.Arrays;

public class LongestNameFinder {

    public static void main(String[] args) {

        ArrayList<String> names = new ArrayList<>(Arrays.asList("Phil", "Anny", "Richard", "Chris"));

        String longestUserName = longestName(names);
        System.out.println("Longest user name: " + longestUserName);
        longestName(new ArrayList<>());
    }

    public static String longestName(ArrayList<String> names) {

        if (names.isEmpty()) {
            throw new IllegalArgumentException("List is empty!");
        }
        int maxNameLength = 0;
        String longestName = "";

        for (String name : names) {
            if (name.length() > maxNameLength) {
                maxNameLength = name.length();
                longestName = name;
            }
        }

        return longestName;
    }
}

//Output

//longestName(names) ---> "Richard";
//longestName(new ArrayList<>()) ---> IllegalArgumentException;