Formatting a specific amount of time in a friendly way

TimeUtils.java

/**
   * Formats the amount of time in a friendly way.
   * 
   * @param millis Amount of time in milliseconds.
   * @param nicly When the amount of time is less than 1 minute, the message will be cool.
   * @return Friendly description of the amount of time.
   */
  public static String friendlyAmountTime(long millis, boolean nicly)
  {
    long hours = TimeUnit.MILLISECONDS.toHours(millis);
    long minutes = TimeUnit.MILLISECONDS.toMinutes(millis);
    long seconds = TimeUnit.MILLISECONDS.toSeconds(millis);
    StringBuilder sb = new StringBuilder();
    if (nicly)
    {
      sb.append("Really fast!");
    }
    else
    {
      sb.append("< 1 second");
    }
    if (millis > 999)
    {
      sb.delete(0, sb.length());
      if (hours > 0)
      {
        sb.append(hours);
        sb.append(" hour");
        if (hours > 1)
        {
          sb.append("s");
        }
      }
      if (minutes > 0)
      {
        sb.append(" ");
        sb.append(minutes);
        sb.append(" minute");
        if (minutes > 1)
        {
          sb.append("s");
        }
      }
      if (seconds > 0)
      {
        sb.append(" ");
        sb.append(seconds);
        sb.append(" second");
        if (seconds > 1)
        {
          sb.append("s");
        }
      }
    }
    
    return sb.toString().trim();
  }