Count "yo" in a String Problem using Java

import java.util.Arrays;

public class Main {
  static int hjtthegreat(String s, int id, int cnt, boolean[] visited) {
    if (id + 1 > (int) s.length()) {
      return cnt;
    }
    if (s.charAt(id) == 'y' && s.charAt(id + 1) == 'o') {
        visited[id] = visited[id + 1] = true;
        if (id == 0 || s.charAt(id - 1) != 'o' || visited[id - 1]) {
            return hjtthegreat(s, id + 1, cnt + 1, visited);
        }
    }
    return hjtthegreat(s, id + 1, cnt, visited);
  }

  public static void main(String[] args) {
    String[] s = {"ayoxyoxyoxyoxyo", "ayobyoayobhadjipogiyoayobyo",
                "xyoxhadjiohiyoyoyo", "yoyooyoxhadjiohioyooyoyoxxyoyo"};
    int id = 0;
    int cnt = 0;
    boolean[] visited;
    for (int i = 0; i < (int) s.length; i++) {
      visited = new boolean[(int) s[i].length()];
      Arrays.fill(visited, false);
      System.out.println(s[i] + (i % 2 == 0 ? "=" : ":") + hjtthegreat(s[i], id, cnt, visited));
    }
  }
}