java retain information in recursive function

Question

Is it possible to retain information via a helper function with java, without using static variables.

For example,

public void foo(){
    int v = 0;
         


        

Answer 1

You can pass an object to store the update for each recursive call. Something like the one below.

public static void fooHelper(int depth, HashMap map){
      map.put(depth, "Call " + depth);
      if (depth > 0)
      {
        fooHelper(depth-1, map);
      }
      return;
    }