Can we use String.format() to pad/prefix with a character with desired length?

Question

Can java.lang.String.format(String str, String str1) be used for adding prefix of a particular character.

I could do this for a number like:

Answer 1

You can use this hackish way to get your output:

String sendID = "AABB";
String output = String.format("%0"+(32-sendID.length())+"d%s", 0, sendID);

Demo: http://ideone.com/UNVjqS