Display elapsed time with month an day support in JAVA

问题

I need to display elapsed time in my application form.
I currently do this using this code:

    AppTimer = new Timer();
    AppTimer.scheduleAtFixedRate(new java.util.TimerTask() {
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        public void run() {
            sdf.setTimeZone(java.util.TimeZone.getTimeZone("GMT+0"));
            lblAppRunTime.setText(""+sdf.format(new Date(AppTimeCounter*1000)));
            AppTimeCounter++;
        }
    },1000, 1000);

This Code shows hours,minutes & seconds properly but how can I show DAYS & MONTHS? new SimpleDateFormat("M D HH:mm:ss") can't do this and for example when 5 seconds elapsed it shows 1 month and 1 days too!

How can I show month and day too?

Thanks

回答1:

You should not use the Date class for it, because a date is an instant of time, but you are using it as a duration. Please read carefully joda time documentation about it. And then you could use Period and PeriodFormatter for you task. Or write something similar if you don't want use the library.

来源：https://stackoverflow.com/questions/7807119/display-elapsed-time-with-month-an-day-support-in-java