Java Format Long

Question

I have Hours, Minutes and Seconds stored in long variables. Pretend that the current values of these are:

long seconds = 30;
long minutes = 0
long hours = 0;

When I convert these to strings and print them:

Long.toString(Hours)+":"+Long.toString(Minutes)+":"+Long.toString(Seconds)

The output looks like

0:0:30

I want:

00:00:30

I'm assuming this should be straight forward but I cant work it out..

`System.out.printf("%02d:%02d:%02d", hours, minutes, seconds)`. Or `String.format`, or some variant. — Andy Turner, Aug 25 '16 at 11:37
you can find there some exampels: [Adding leading Zeroes](http://stackoverflow.com/questions/275711/add-leading-zeroes-to-number-in-java) — Soengend, Aug 25 '16 at 11:42
It's a good manner to mark solutions by clicking on a gray tick under the downvote gray triange next to the answer. — xenteros, Aug 25 '16 at 14:27

score 3 · Answer 1 · edited Aug 25 '16 at 11:46

3

Try the following:

System.out.printf("%02d:%02d:%02d", hours, minutes, seconds);

If you want to store the String in a variable do the following:

String s = String.format("%02d:%02d:%02d", hours, minutes, seconds);

edited Aug 25 '16 at 11:46

Andy Turner

answered Aug 25 '16 at 11:40

xenteros

score -1 · Answer 2 · answered Aug 25 '16 at 11:38

-1

use String.format("%02d", your number)

for more info read javadoc

answered Aug 25 '16 at 11:38

Durgpal Singh

2 Answers2