【Java】最长字符串和最短字符串

从键盘上读入5个字符串存入数组str中，然后输出这5个字符串中最长字符串和最短字符串。

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] str = new String[5];
        for (int i = 0; i < 5; i++) {
            str[i] = sc.nextLine();
        }
        String longest = str[0];
        String shortest = str[0];
        for (String s: str) {
            if (s.length() > longest.length()) {
                longest = s;
            }
            if (s.length() < shortest.length()) {
                shortest = s;
            }
        }
        System.out.println(longest);
        System.out.println(shortest);
        sc.close();
    }
}