How to format longs in android to always display two digits

Question

I have a countdown timer which shows seconds from 60 to 0 (1 min countdown timer). When it reaches 1 digit numbers such as 9,8,7.. it shows 9 instead of 09. I tried using

Answer 1

TextView time; 
int hour=0,minute=0,second=0;
time.setText((String.format("%02d", hour))+":"+(String.format("%02d", minute))+":"+(String.format("%02d", second)));

time to TextView