What formatter pattern should I use to get '00123', '00001' strings from numbers '123' and '1' correspondingly?

Question

I need to format numbers in a way that they should be preceded with zeros to contain 5 digits.

I don't get how to create patterns for java formatter.

I tried %4d but it doesn't adds zeros.

Answer 1

%05d should do it I believe

Answer 2

int a=123;   
System.out.println(String.format("%05d",a));