* @param start1
   * @param end1
   * @param string2
   * @param start2
   * @param end2
   * @param MV_returnarray
   * @return int
   */
  public static int findMismatch(String string1, int start1, int end1, String string2, int start2, int end2, Object [] MV_returnarray) {
    if (end1 == Stella.NULL_INTEGER) {
      end1 = string1.length();
    }
    if (end2 == Stella.NULL_INTEGER) {
      end2 = string2.length();
    }
    { int len = Stella.helpFindMatchingPrefixLength(string1, start1, end1, string2, start2, end2);

      start1 = start1 + len;
      start2 = start2 + len;
      if ((start1 == end1) &&
          (start2 == end2)) {
        { int _return_temp = Stella.NULL_INTEGER;

          MV_returnarray[0] = IntegerWrapper.wrapInteger(Stella.NULL_INTEGER);
          return (_return_temp);
        }
      }
      else {
        { int _return_temp = start1;

          MV_returnarray[0] = IntegerWrapper.wrapInteger(start2);
          return (_return_temp);
        }
      }
    }
  }