Convert 1 to 01

Question

I have an int between 1 - 99. How do I get it to always be a double digit, ie: 01, 04, 21?

Answer 1

I think, I should add the link to the official Java documentation on formatting numeric outputs.

https://docs.oracle.com/javase/tutorial/java/data/numberformat.html

Sample Snipplet: Prints 00 up to 100

class Main {
    public static void main(String[] args) {
      for(int i=0;i<=100;i++){
        System.out.println(String.format("%02d", i)); 
      }
    }
}

Output:

00
01
...
10
...
100