symbol not found?

Main.java

package com.company;

public class Main {

    public static void main(String[] args) {
        for(int i = args.length() - 1; i >= 0; i--) {
            reverse(args[i]);
        }
        System.out.println();
    }

    public static void reverse(String s) {
        for(int i = s.length() - 1; i >= 0; i--) {
            System.out.print(s.charAt(i));
        }
        System.out.print(" ");
    }
}