title: Java JodaTime Period Formatting
body: <p>In Joda time, I need to find the difference between 2 periods:</p>
  
  <pre><code>  PeriodFormatter formatter = new PeriodFormatterBuilder()
              .printZeroAlways().minimumPrintedDigits(2)
              .appendHours().appendSuffix(":").appendMinutes().appendSuffix(":").appendSeconds()
              .toFormatter();
    Period period1 = formatter.parsePeriod("11:20:50");
    Period period2 = formatter.parsePeriod("13:40:00");
    Period difference1 = period1.minus(period2).normalizedStandard();
    System.out.println(formatter.print(difference1));  //shows -02:-19:-10
  </code></pre>
  
  <p>The result is <code>-02:-19:-10</code> but I want to show as <code>-02:19:10</code>. Is there any formatting I can do in JodaTime to achieve that?</p>