Specify number of digits in java

Question

Suppose you have:

int a = 3;

And I want to specify that the number of digits is 5. So that when I print it the output is:

00003

Thanks!

Answer 1

An int stores only the value, no formatting information. To show or preserve leading zeros you have to use a String.

 System.out.println(String.format("%05d", a));