/**
   * Speculative method to see if it can determine a trend. The larger the number the stronger the
   * trend.
   *
   * @return current - interger. A positive number is an increasing trend. A negative number is a
   *     decreasing trend.
   */
  public int getTrend() {

    int retVal = 0;

    // based on current ping values.
    if (currPing < 0.0) {
      retVal--;
    } else {
      if (currPing < shortTerm.getAverage()) {
        retVal++;
      } else {
        retVal--;
      }

      if (currPing < medTerm.getAverage()) {
        retVal++;
      } else {
        retVal--;
      }

      if (currPing < longTerm.getAverage()) {
        retVal++;
      } else {
        retVal--;
      }
    }

    // compare shortTerm and medium term averages.
    if (shortTerm.getAverage() < medTerm.getAverage()) {
      retVal++;
    } else {
      retVal--;
    }

    // compare short-term with long term.
    if (shortTerm.getAverage() < longTerm.getAverage()) {
      retVal++;
    } else {
      retVal--;
    }

    // compare medium-term with long-term.
    if (medTerm.getAverage() < longTerm.getAverage()) {
      retVal++;
    } else {
      retVal--;
    }

    // modify results based on absolute ping values.
    final int ABSOLUTE_GOOD_PING_VALUE = 30;
    if (currPing < ABSOLUTE_GOOD_PING_VALUE) {
      retVal++;
    }
    if (shortTerm.getAverage() < ABSOLUTE_GOOD_PING_VALUE) {
      retVal++;
    }
    if (medTerm.getAverage() < ABSOLUTE_GOOD_PING_VALUE) {
      retVal++;
    }
    if (longTerm.getAverage() < ABSOLUTE_GOOD_PING_VALUE) {
      retVal++;
    }

    // modify results based on absolute ping values that are too long.
    final int ABSOLUTE_BAD_PING_VALUE = 300;
    if (currPing > ABSOLUTE_BAD_PING_VALUE) {
      retVal--;
    }
    if (shortTerm.getAverage() > ABSOLUTE_BAD_PING_VALUE) {
      retVal--;
    }
    if (medTerm.getAverage() > ABSOLUTE_BAD_PING_VALUE) {
      retVal--;
    }
    if (longTerm.getAverage() > ABSOLUTE_BAD_PING_VALUE) {
      retVal--;
    }

    return retVal;
  } // getTrend
 public void addPingTime(int ping) {
   currPing = (double) ping;
   shortTerm.update((double) ping);
   medTerm.update((double) ping);
   longTerm.update((double) ping);
 }