Why we use %2d in array?

Question

Can I know if there is any word to replace %2d? Or we must use %2d?

public class Main {
public static void main(String[] args) {
int [][]a = new int[10][10];
for(int i = 0; i < 10; i++)
{
for(int j = 0; j < 10; j++)
{
System.out.printf("%2d ", a[i][j]);
}
System.out.println();
}
}
}

Answer 1

How to format a Java int or long with printf example

https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/How-to-format-a-Java-int-with-printf-example

Answer 2

Meaning of %2d is it outputs a integer which fills (here 2) character spaces which also insert spaces to it's both side, if we increase the value the width will also increase.
Ex:- %6d will fill six character spaces

Answer 3

Ouhh, now i understand. Thanks for your help!!

Answer 4

ainul mardhiah you are most welcome